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Oil, Gas & Geothermal - Field Rules 

Pursuant to California Code of Regulations (CCR) Title 14, Division 2, Chapter 4, Section 1722 (k), the State Oil and Gas Supervisor may establish Field Rules for any oil and gas pool or zone in a field when sufficient geologic and engineering data is available from previous drilling operations. Field Rules supplement more broadly applicable statutory and regulatory requirements. Each Field Rule is specific to a field, and in many cases, specific to Areas and Zones or Pools within a field.

The Division has established Field Rules for those fields where geologic and engineering information is available to accurately describe subsurface conditions. These Field Rules identify downhole conditions and well construction information that oil and gas operators should consider when drilling and completing onshore oil and gas wells.

Field Rules are continually reviewed and updated as ongoing field operations generate new technical information, including geologic data. Operators planning to drill should review the most recent field rule versions before drilling.

  • To view and download an Excel file of the Field Rules Index, click here.

  • To inquire about Field Rules, contact the Division District office where the field is located. For a list of district offices, click here.

Index to Field Rules

(click on field name to view or download a PDF file of Field Rule for that field and pool/zone.)

A B C D E F G H  I J K L M N O P R S T U V W
Field Area Pool/Zone District Type
Afton Gas Main, Northwest All Productive zones 6

Drilling/Completion

Ant Hill N/A Olcese 4 Drilling/Completion
Antelope Hills Hopkins Phacoides & Point of Rocks 4 Drilling/Completion
Antelope Hills Williams Button Bed 4 Drilling/Completion
Antelope Hills Williams Upper 4 Drilling/Completion
Antelope Hills, North N/A All Pools 4 Drilling/Completion
Arbuckle Gas N/A Forbes 6

Drilling/Completion

Arroyo Grande Tiber Dollie 3

Drilling/Completion

Ash Slough Gas N/A Cretaceous / Moreno 5 Drilling/Completion
Asphalto N/A Carneros 4 Drilling/Completion
Asphalto N/A Etchegoin 4 Drilling/Completion
Asphalto N/A Olig, Stevens, & Antelope Shale 4 Drilling/Completion
Asphalto N/A Tulare 4 Drilling/Completion
Barham Ranch-Revised All Sisquoc, Monterey 3 Drilling/Completion
Beer Nose N/A Bloemer 4 Drilling/Completion
Belgian Anticline All Areas All Pools (Agua, Carneros, Phacoides, Oceanic & Point of Rocks 4 Drilling/Completion
Bellevue All Areas Stevens 4 Drilling/Completion
Bellevue, West N/A Stevens 4 Drilling/Completion
Belridge, North N/A Diatomite 4 Drilling/Completion
Belridge, North N/A Tulare-Etchegoin 4 Drilling/Completion
Belridge, South N/A Antelope Shale 4 Drilling/Completion
Belridge, South N/A Etchegoin, Diatomite 4 Drilling/Completion
Belridge, South N/A Tulare 4 Drilling/Completion
Bounde Creek Gas N/A All Productive zones 6 Drilling/Completion
Bowerbank N/A All Gas Pools 4 Drilling/Completion
Brea-Olinda N/A First Miocene, Pliocene, Second Miocene, Third Miocene, Third Pliocene 1 Drilling/Completion
Brentwood East Gas N/A Third Massive 6 Drilling/Completion
Buckeye  Gas N/A Kione, Forbes 6 Drilling/Completion
Buena Vista Buena Vista Front Above Scalez (AS) 4 Drilling/Completion
Buena Vista Buena Vista Front Mulinia 4 Drilling/Completion
Buena Vista Buena Vista Front SubScalez One (SS1) 4 Drilling/Completion
Buena Vista Buena Vista Front SubScalez Two (SS2) 4 Drilling/Completion
Buena Vista Buena Vista Hills 99-9D 4 Drilling/Completion
Buena Vista Buena Vista Hills Antelope Shale 4 Drilling/Completion
Buena Vista Buena Vista Hills Calitroleum 4 Drilling/Completion
Buena Vista Buena Vista Hills Gusher 4 Drilling/Completion
Buena Vista Buena Vista Hills Mya (Gas) 4 Drilling/Completion
Buena Vista Buena Vista Hills Sub-Mulinia 4 Drilling/Completion
Buena Vista Buena Vista Hills Top Oil (Sub-Scalez) 4 Drilling/Completion
Buena Vista Buena Vista Hills Wilhelm 4 Drilling/Completion
Buena Vista Buena Vista Hills 27-B (E Sands) 4 Drilling/Completion
Buena Vista Buena Vista Hills 555 Stevens 4 Drilling/Completion
Bunker Gas N/A All Productive Pools to Date 6 Drilling/Completion
Butte Sink Gas N/A All Productive Zones 6 Drilling/Completion
Butte Slough Gas N/A All Productive Zones 6 Drilling/Completion
Cache Creek Gas N/A Starkey, Winters 6 Drilling/Completion
Cache Slough Gas N/A All Productive Zones 6 Drilling/Completion
Cal Canal Gas N/A Etchegoin 4 Drilling/Completion
Cal Canal Gas N/A Stevens 4 Drilling/Completion
Calders Corner N/A Upper Stevens 4 Drilling/Completion
Canal All Areas (Main & Pioneer Canal) Upper Stevens, Middle Stevens, & Lower Stevens 4 Drilling/Completion
Canal Main Gas Zone (Pliocene)
Canfield Ranch All Areas Stevens 4 Drilling Completion
Canfield Ranch East Gosford Stevens 4 Drilling/Completion
Careaga Canyon San Antonio Monterey 3 Drilling/Completion
Carneros Creek N/A Point of Rocks 4 Drilling/Completion
Carneros Creek N/A Button Bed, Carneros, & Wygal (Phacoides) 4 Drilling/Completion
Cascade N/A All 2 Drilling/Completion
Cat Canyon Central All Sisqoc sands 3 Drilling/Completion
Cat Canyon East All Sisquoc zones including the Brooks sand 3 Drilling/Completion
Cat Canyon Sisquoc All Sisquoc sands EXCEPT the Thomas and S 17 sands 3 Drilling/Completion
Cat Canyon West Monterey 3 Drilling/Completion
Cat Canyon West All Sisquoc sands 3 Drilling/Completion
Chico-Martinez N/A Etchegoin 4 Drilling/Completion
Chico-Martinez N/A Fractured Shale 4 Drilling/Completion
Cienaga Canyon N/A Temblor "A" 4 Drilling/Completion
Clarksburg Gas N/A All Productive zones 6 Drilling/Completion
Coalinga N/A Etchegoin-Temblor 5 Drilling/Completion
Coalinga, East, Extension Coalinga Nose Miocene (Vaqueros), Eocene (Gatchell) 5 Drilling/Completion
Coalinga, East, Extension Northwest Eocene (Gatchell) 5 Drilling/Completion
Coles Levee, North N/A Gas Zone (Etchegoin) 4 Drilling/Completion
Coles Levee, North N/A Stevens 4 Drilling/Completion
Comanche Point N/A Santa Margarita 4 Drilling/Completion
Compton Landing  Gas N/A Kione, Forbes 6 Drilling/Completion
Conway Ranch Gas N/A All Productive Zones 6 Drilling/Completion
Corning South Gas N/A All Productive Zones 6 Drilling/Completion
Cuyama, South Main Dibblee, Colgrove 3 Drilling/Completion
Cuyama, South Main Santa Margarita  3 Drilling/Completion
Cymric Sheep Springs Tulare 4 Drilling/Completion
Cymric Welport Etchegoin 4 Drilling/Completion
Cymric Welport Olig (Reef Ridge) 4 Drilling/Completion
Cymric Welport Tulare (Amnicola) 4 Drilling/Completion
Cymric Salt Creek Main Carneros & Phacoides 4 Drilling/Completion
Cymric Salt Creek Main Etchegoin 4 Drilling/Completion
Cymric Salt Creek West Phacoides 4 Drilling/Completion
Cymric Sheep Springs Carneros 4 Drilling/Completion
Cymric Sheep Springs Phacoides & Oceanic 4 Drilling/Completion
Cymric Welport Carneros, Agua, Phacoides, Oceanic, & Point of Rocks 4 Drilling/Completion
Davis Southeast Gas N/A All Productive Zones 6 Drilling/Completion
Denverton Creek Gas N/A All Productive Pools to Date 6 Drilling/Completion
Devils Den Alferitz Escudo 4 Drilling/Completion
Devils Den Alferitz Wagonwheel, Point of Rocks, & Avenal 4 Drilling/Completion
Devils Den Bates Bates 4 Drilling/Completion
Devils Den Old All Pools 4 Drilling/Completion
Dixon East Gas All All Productive Zones 6 Drilling/Completion
Dry Slough Gas East, West Winters 6 Drilling/Completion
Dunnigan Hills Gas All All Productive Pools to Date 6 Drilling/Completion
Durham Gas N/A All Productive Zones 6 Drilling/Completion
Dutch Slough Gas N/A All Productive Pools to Date 6 Drilling/Completion
East Islands Gas N/A Meganos Canyon, Mokelumne River 6 Drilling/Completion
Edison  Main Freeman-Jewett 4 Drilling/Completion
Edison  Main Kern River-Chanac 4 Drilling/Completion
Edison  Main Nozu 4 Drilling/Completion
Edison  Main Santa Margarita 4 Drilling/Completion
Edison  Main Wicker 4 Drilling/Completion
Edison  Racetrack Hill Kern River-Chanac 4 Drilling/Completion
Edison  West Nozu 4 Drilling/Completion
Edison Edison Groves Kern River-Chanac 4 Drilling/Completion
Edison Edison Groves Olcese 4 Drilling/Completion
Edison Jeppi Chanac, & Santa Margarita 4 Drilling/Completion
Edison Jeppi Jewett, Pyramid Hill, & Vedder 4 Drilling/completion
Edison Main Kern River-Chanac, Santa Margarita & Wicker 4 Drilling/Completion
Edison Main Nozu, Freeman-Jewett, Walker & Schist 4 Drilling/Completion
Edison Portals-Fairfax Wicker & Nozu 4 Drilling/Completion
Edison Race Track Hill Kern River-Chanac, Santa Margarita 4 Drilling/Completion
Edison Race Track Hill Wicker, Nozu, Jewett, Pyramid Hill & Vedder 4 Drilling/Completion
Edison West All Pools 4 Drilling/Completion
Edison, Northeast N/A Chanac 4 Drilling/Completion
Eldorado Bend Gas N/A Starkey, Winters 6 Drilling/Completion
Elk Hills N/A Mya (Gas) 4 Drilling/Completion
Elk Hills N/A Shallow Oil Zone (SOZ) 4 Drilling/Completion
Elk Hills N/A Stevens and Northwest Stevens 4 Drilling/Completion
Elkhorn Slough Gas N/A Winters 6 Drilling/Completion
Everglade Gas N/A Forbes 6 Drilling/Completion
French Camp Gas N/A All Productive Pools to Date 6 Drilling/Completion
Fruitvale Calloway 40-7 4 Drilling/Completion
Fruitvale Calloway 42-0 4 Drilling/Completion
Fruitvale Greenacres Chanac 4 Drilling/Completion
Fruitvale Greenacres Lerdo 4 Drilling/Completion
Fruitvale Main Fairhaven 4 Drilling/Completion
Fruitvale Main Kernco 4 Drilling/Completion
Fruitvale Main Martin 4 Drilling/Completion
Fruitvale Main Mason-Parker 4 Drilling/Completion
Fruitvale Main Santa Margarita 4 Drilling/Completion
Gill Ranch Gas N/A Eocene, Cretaceous 5 Drilling/Completion
Grand Island Gas N/A All Productive Zones 6 Drilling/Completion
Greeley N/A All Pools (Stevens, Olcese 12-21, and Rio Bravo-Vedder) 4 Drilling/Completion
Greenwood Gas N/A Eocene, Forbes 6 Drilling/Completion
Greenwood, South, Gas N/A Eocene, Kione, Forbes 6 Drilling/Completion
Grimes Gas N/A Kione, Forbes 6 Drilling/Completion
Grimes, West, Gas N/A Kione, Forbes 6 Drilling/Completion
Grizzly Bluff Gas N/A Rio Dell 6 Drilling/Completion
Guijarral Hills All Miocene (Sanger, Leda), Eocene (Gatchell or Bourdieu) 5 Drilling/Completion
Hasley Canyon N/A All 2 Drilling/Completion
Helm N/A Miocene (Zilch), Cretaceous 5 Drilling/Completion
Howells Point Gas N/A All Productive Zones 6 Drilling/Completion
Inglewood Any Area-East of
Newport-Inglewood Fault		 Bradna, City of Inglewood, Nodular Shale and Sentous 1 Drilling/Completion
Inglewood Any Area-East of
Newport-Inglewood Fault		 Investment, Vickers-Machado, Rindge, Rubel, Moynier 1 Drilling/Completion
Inglewood Any Area-West of
Newport-Inglewood Fault		 Bradna, City of Inglewood, Nodular Shale and Sentous 1 Drilling/Completion
Inglewood Any Area-West of
Newport-Inglewood Fault		 Investment, Vickers-Machado, Rindge, Rubel, Moynier 1 Drilling/Completion
Jacalitos N/A Temblor 5 Drilling/Completion
Jasmin N/A All Pools (Pyramid Hill & Cantleberry) 4 Drilling/Completion
Karnak Gas N/A Starkey, Winters 6 Drilling/Completion
Kern Bluff N/A Transition, Santa Margarita, Miocene 4 Drilling/Completion
Kern Front N/A Etchegoin-Chanac 4 Drilling/Completion
Kern River N/A Kern River 4 Drilling/Completion
Kern River N/A Vedder 4 Drilling/Completion
Kettleman Middle Dome N/A Miocene (Temblor), Eocene (Kreyenhagen, McAdams) 5 Drilling/Completion
Kettleman North Dome N/A Miocene (Temblor Zones I,II,III,IV,V, Felix silt,Burbank,Whepley & Vaqueros), Eocene (Keyenhagen, Upper & Lower McAdams) 5 Drilling/Completion
King Island Gas N/A Mokelumne River 6 Drilling/Completion
Kirby Hill Gas N/A Markley, Mortonville, Domengine, Wagenet 6 Drilling/Completion
Kirk Gas N/A Forbes 6 Drilling/Completion
Kirkwood Gas N/A All Productive Pools to Date 6 Drilling/Completion

Knights Landing Gas

Grays Bend Winters 6 Drilling/Completion

Knights Landing Gas

N/A Mokelumne River, Hamilton, Starkey, Winters 6 Drilling/Completion
Kreyenhagen N/A Miocene (Temblor, Reef Ridge) 5 Drilling/Completion

La Goleta Gas

N/A Sespe 3 Drilling/Completion

La Honda

 Main, South All Productive Zones 6 Drilling/Completion
Landslide N/A Stevens 4 Drilling/Completion
Lathrop Gas N/A Azevedo, Tracy, Lathrop 6 Drilling/Completion
Lindsey Slough Gas N/A All Productive Pools to Date 6 Drilling/Completion
Little Butte Creek Gas N/A All Productive Zones 6 Drilling/Completion
Livermore N/A All Productive Zones 6 Drilling/Completion
Lodi Gas N/A All Productive Zones 6 Drilling/Completion
Lompoc Main Monterey and Point Sal 3 Drilling/Completion

Lone Star Gas

N/A Forbes 6 Drilling/Completion
Los Lobos N/A Etchegoin 4 Drilling/Completion
Los Lobos N/A Reef Ridge & Monterey 4 Drilling/Completion
Los Medanos Gas Main, Northeast All Productive Zones 6 Drilling/Completion
Lost Hills N/A Cahn (Fractured Chert/Antelope Shale) 4 Drilling/Completion
Lost Hills N/A Etchegoin 4 Drilling/Completion
Lost Hills N/A Reef Ridge 4 Drilling/Completion
Lost Hills N/A Tulare 4 Drilling/Completion
Lost Hills, Northwest N/A Antelope 4 Drilling/Completion
Lost Hills, Northwest N/A Etchegoin 4 Drilling/completion
Lynch Canyon N/A Monterey / Lanigan Sand 3 Drilling/Completion
Maine Prairie Gas N/A All Productive Pools to Date 6 Drilling/Completion
Malton-Black Butte Gas N/A Eocene, Kione, Forbes 6 Drilling/Completion
McCool Ranch N/A Monterey Formation, "E" Sands, Lombardi 3 Drilling/Completion
McDonald Anticline Layman Agua 4 Drilling/Completion
McDonald Island Gas N/A McDonald Island 6 Drilling/Completion
McKittrick Main Olig and Basal Reef Ridge 4 Drilling/Completion
McKittrick Main Stevens and Antelope Shale 4 Drilling/Completion
McKittrick Main Upper (Tulare-San Joaquin) 4 Drilling/Completion
McKittrick Northeast Carneros 4 Drilling/Completion
McKittrick Northeast Olig and Antelope Shale 4 Drilling/Completion
McKittrick Northeast Phacoides (Wygal), Oceanic, & Point of Rocks 4 Drilling/Completion
McKittrick Northeast Tulare (amnicola) & San Joaquin 4 Drilling/Completion
McMullin Ranch Gas N/A Blewett 5 & Tracy, E Zone 6 Drilling/Completion
Medora Lake Gas N/A All Productive Zones 6 Drilling/Completion
Merrill Avenue Gas N/A Late Cretaceous / Moreno 5 Drilling/Completion
Merritt Gas N/A All Productive Zones 6 Drilling/Completion
Midway Sunset N/A Lakeview, Sub-Lakeview, Potter, Marvic, Antelope Shale 4 Drilling/Completion
Midway Sunset N/A Monarch (Spellacy), Webster, Moco, Obispo, Pacific, Leutholtz (Metson), Republic 4 Drilling/Completion
Midway Sunset N/A Tulare, Mya Tar Sands, Top Oil, Kinsey, Wilhelm, Gusher, Calitroleum 4 Drilling/Completion
Millar Gas Main, West All Productive Pools to Date 6 Drilling/Completion
Moffatt Ranch Gas N/A Eocene, Cretaceous 5 Drilling/Completion
Monroe Swell Northwest All 3 Drilling/Completion
Montalvo, West All All 2 Drilling/Completion
Montebello Main 1st, 2nd, 3rd & 4th zones 1 Drilling/Completion
Monument Junction All Antelope 4 Drilling/Completion
Moon Bend Gas N/A Kione, Forbes 6 Drilling/Completion
Mount Poso Dominion Pyramid Hill 4 Drilling/Completion
Mount Poso Dominion, Dorsey, & Granite Canyon Vedder 4 Drilling/Completion
Mount Poso Main Pyramid Hill 4 Drilling/Completion
Mount Poso Baker-Grover, Main, & West Vedder 4 Drilling/Completion
Mountain View Arvin Chanac 4 Drilling/Completion
Mountain View Arvin Santa Margarita 4 Drilling/Completion
Mountain View Arvin Schist 4 Drilling/Completion
Mountain View Digiorgio Santa Margarita 4 Drilling/Completion
Mountain View Digiorgio Schist 4 Drilling/Completion
Mountain View Main Hood (Basal Chanac) 4 Drilling/Completion
Mountain View Main Wharton (Hogan) 4 Drilling/Completion
Mountain View Vacarro Cattani 4 Drilling/Completion
Mountain View Vacarro Chanac 4 Drilling/Completion
Mountain View Vacarro Derby 4 Drilling/Completion
Mountain View Vacarro Houchin 4 Drilling/Completion
Mountain View West Arvin Cattani 4 Drilling/Completion
Mountain View West Arvin Chanac-Cattani 4 Drilling/Completion
Newhall-Potrero N/A All 2 Drilling/Completion
Newport, West Onshore "A" and "B" 1 Drilling/Completion
Newport, West Onshore "C" 1 Drilling/Completion
Newport, West Onshore "D", "E" and "F" 1 Drilling/Completion
Oak Park N/A Sespe 2 Drilling/Completion
Oakley South Gas N/A Third Massive 6 Drilling/Completion
Oat Mountain N/A All 2 Drilling/Completion
Oil Creek N/A All Productive Zones 6 Drilling/Completion
Ojai All All 2 Drilling/Completion
Orcutt Main Sisquoc - Diatomite 3 Drilling/Completion
Orcutt Main Monterey and Point Sal 3 Drilling/Completion
Ord Bend Gas N/A All Productive Pools to Date 6 Drilling/Completion
Orland Gas N/A All Productive Zones 6 Drilling/Completion
Oxnard N/A Vacca Tar Sand-Miocene 2 Drilling/Completion
Pacoima N/A All 2 Drilling/Completion
Paloma All Areas Lower Stevens, Paloma (Stevens), and Antelope 4 Drilling/Completion
Paloma Main Gas Zone 4 Drilling/Completion
Perkins Lake Gas N/A All Productive Zones 6 Drilling/Completion
Pierce Road Gas N/A Forbes, Guinda 6 Drilling/Completion
Pioneer N/A Pioneer 4 Drilling/Completion
Placerita N/A All 2 Drilling/Completion
Playa Del Rey Del Rey Hills and Venice  Upper and Lower 1 Drilling/Completion
Pleasant Creek Gas N/A All Productive Zones 6 Drilling/Completion
Pleasant Valley All Miocene (Temblor), Eocene (Gatchell) 5 Drilling/Completion
Plieto Creek Santa Margarita 4 Drilling/Completion
Plieto Ranch Chanac-Santa Margarita 4 Drilling/Completion
Poso Creek All Etchegoin-Chanac 4 Drilling/Completion
Princeton Gas Main Kione 6 Drilling/Completion
Princeton Gas Townlot Kione 6 Drilling/Completion
Putah Sink Gas N/A Starkey, Winters 6 Drilling/Completion
Pyramid Hills All Miocene, Cretaceous 5 Drilling/Completion
Railroad Gap N/A 2nd Mya (Gas) 4 Drilling/Completion
Railroad Gap N/A Olig, Antelope Shale, Valv, Carneros, Upper Santos 4 Drilling/Completion
Raisin City All Miocene (Zilch), Eocene 5 Drilling/Completion
Rancho Capay Gas N/A All Productive Zones 6 Drilling/Completion
Rice Creek Gas N/A Kione, Forbes 6 Drilling/Completion
Rice Creek, East, Gas N/A Forbes 6 Drilling/Completion
Rio Vista Gas N/A All Productive Pools to Date 6 Drilling/Completion
River Break Gas Main, South All Productive Zones 6 Drilling/Completion
River Island Gas N/A All Productive Pools to Date 6 Drilling/Completion
Riverdale N/A Miocene (Zilch), Cretaceous 5 Drilling/Completion
Robbins Gas N/A All Productive Zones 6 Drilling/Completion
Roberts Island Gas N/A All Productive Zones 6 Drilling/Completion
Rose N/A McClure 4 Drilling/Completion
Rosedale East Stevens 4 Drilling/Completion
Rosedale Main Stevens 4 Drilling/Completion
Rosedale North Lower Massive Stevens 4 Drilling/Completion
Rosedale South Stevens 4 Drilling/Completion
Rosedale Ranch Main Chanac (All pools), Santa Margarita 4 Drilling/Completion
Rosedale Ranch Main Etchegoin Sand 4 Drilling/Completion
Rosedale Ranch Main Lerdo 4 Drilling/Completion
Round Mountain All All Pools 4 Drilling/Completion
Russell  Ranch All Colgrove 3 Drilling/Completion
Russell Ranch Main Santa Margarita, "Sand Streaks", Dibblee 3 Drilling/Completion
Russell Ranch "Russell Trusts" Lease "Sand Streaks" and Dibblee / "Athena" 3 Drilling/Completion
Sacramento Airport Gas N/A All Productive Zones 6 Drilling/Completion
San Ardo Main Area Lombardi, Aurignac 3 Drilling/Completion
San Ardo Main Lombardi, Aurignac-"Slim Hole" steamflood injection wells 3 Drilling/Completion
San Ardo North Area, Salinas Energy "Lombardi" lease Lombardi 3 Drilling/Completion
San Emidio All Areas All Pools 4 Drilling/Completion
San Miguelito N/A All 2 Drilling/Completion
Santa Fe Springs N/A Bell, Bell 100, Buckbee, Clark-Hathaway, Foix, Gas Zone, Meyer, Nordstrom, O'Connell, Santa Fe 1 Drilling/Completion
Santa Maria Valley All Foxen Tar Sands 3 Drilling/Completion
Santa Maria Valley Bradley, Clark, Southeast Basal Sisquoc 3 Drilling/Completion
Santa Maria Valley Bradley, Clark, Southeast Monterey 3 Drilling/Completion
Santa Maria Valley Main Monterey and Point Sal 3 Drilling/Completion
Santa Maria Valley West Monterey 3 Drilling/Completion
Sargent N/A All 3 Drilling/Completion
Saxon Gas N/A All Productive Pools to Date 6 Drilling/Completion
Seventh Standard N/A Stevens (27-3 Sand)
Shafter, North N/A McClure 4 Drilling/Completion
Sherman Island Gas N/A All Productive Zones 6 Drilling/Completion
South Mountain N/A All 2 Drilling/Completion
Stegeman Gas N/A Kione, Forbes 6 Drilling/Completion
Sugarfield Gas N/A Starkey, Winters 6 Drilling/Completion
Strand East, Main, and Northwest Upper Stevens and Lower Stevens 4 Drilling/Completion
Strand Main and Northwest Etchegoin Gas 4 Drilling/Completion
Strand Main Vedder 4 Drilling/Completion
Suisan Bay Gas N/A All Productive Zones 6 Drilling/Completion
Sutter Buttes Gas N/A All Productive Pools to Date 6 Drilling/Completion
Sutter City Gas Main, South All Productive Pools to Date 6 Drilling/Completion
Sycamore Gas N/A All Productive Zones 6 Drilling/Completion
Sycamore Slough Gas N/A All Productive Zones 6 Drilling/Completion
Tapia N/A All 2 Drilling/Completion
Tejon Central JV 4 Drilling/Completion
Tejon Central Olcese 4 Drilling/Completion
Tejon Central Santa Margarita 4 Drilling/Completion
Tejon Central Transition 4 Drilling/Completion
Tejon Southeast Lower Reserve 4 Drilling/Completion
Tejon Southeast Upper Reserve 4 Drilling/Completion
Tejon Western Pulv (Reserve) 4 Drilling/Completion
Tejon Western "Transition" - Santa Margarita 4 Drilling/Completion
Tejon Western Valv 4 Drilling/Completion
Tejon Eastern "Transition"- Santa Margarita 4 Drilling/Completion
Tejon Hills N/A Santa Margarita 4 Drilling/Completion
Tejon, North N/A Fruitvale (Pulv) 4 Drilling/Completion
Tejon, North N/A Olcese, JV, & 'Basal' Sand 4 Drilling/Completion
Tejon, North N/A Vedder, San Emigdio, and Metralia 4 Drilling/Completion
Temblor Ranch N/A Phacoides (Wygal) 4 Drilling/Completion
Ten Section Main Etchegoin (Gas) 4 Drilling/Completion
Ten Section Main Lower Stevens 4 Drilling/Completion
Ten Section Main Upper Stevens 4 Drilling/Completion
Ten Section Northwest Lower Stevens 4 Drilling/Completion
Ten Section Northwest Upper Stevens 4 Drilling/Completion
Thornton, W.-Walnut Grove Gas N/A All Productive Pools to Date 6 Drilling/Completion
Tisdale Gas Main, Southeast Forbes, Guinda 6 Drilling/Completion
Todhunters Lake Gas N/A All Productive Zones 6 Drilling/Completion
Tompkins Hill Lake Gas Main, West All Productive Zones 6 Drilling/Completion
Tracy Gas N/A All Productive Zones 6 Drilling/Completion
Tulare Lake N/A Miocene (Salyer, KCDC, 54-8, Boswell, Vaqueros) 5 Drilling/Completion
Union Island Gas N/A Moreno, Winters 6 Drilling/Completion
Valpredo N/A Santa Margarita 4 Drilling/Completion
Van Ness Slough N/A Miocene (Zilch) 5 Drilling/Completion
Van Sickle Island Gas N/A All Productive Zones 6 Drilling/Completion
Ventura N/A All 2 Drilling/Completion
Verona Gas N/A All Productive Zones 6 Drilling/Completion
Vernalis Gas N/A All Productive Zones 6 Drilling/Completion
Wayside Canyon N/A All 2 Drilling/Completion
Welcome Valley N/A Tumey 4 Drilling/Completion
West Butte Gas N/A Forbes 6 Drilling/Completion
West Mountain N/A All 2 Drilling/Completion
Wheeler Ridge Central Coal Oil Canyon 4 Drilling/Completion
Wheeler Ridge Central Valv, 2-38, and Olcese 4 Drilling/Completion
Wheeler Ridge Central ZA-5, ZB-5, Refugian, and Eocene 4 Drilling/Completion
Wheeler Ridge Northeast FA-2 4 Drilling/Completion
Wheeler Ridge Southeast 72-34 (Olcese) 4 Drilling/Completion
Wheeler Ridge Windgap Reserve and Lower Olcese 4 Drilling/Completion
White Wolf N/A 700 Sand (Chanac) 4 Drilling/Completion
White Wolf N/A Reef Ridge and Antelope 4 Drilling/Completion
Whittier Rideout Heights A-3, Miocene, Pliocene 1 Drilling/Completion
Wild Goose Gas N/A All Productive Zones 6 Drilling/Completion
Williams Gas N/A Forbes 6 Drilling/Completion
Willow Slough Gas N/A Starkey, Winters 6 Drilling/Completion
Willows-Beehive Bend Gas Main, West Kione, Forbes 6 Drilling/Completion
Wilmington Fault Block I, II, III, IV Union Pacific, Ford, 237, Schist 1 Drilling/Completion
Wilmington Fault Block I, II, III, IV Pliocene, Tar, Ranger, Upper Terminal, Lower Terminal 1 Drilling/Completion
Wilmington Fault Block I, II, III, IV, V, and VI Pliocene, Tar, Ranger, Upper Terminal, Lower Terminal 1 Drilling/Completion
Wilmington Fault Block I, II, III, IV, V, and VI Union Pacific, Ford, 237, Schist 1 Drilling/Completion
Wilmington Long Beach Unit - Fault Block V, VI, VII, VIII, VIII A & B, 90, 90 N & S, 98 237 1 Drilling/Completion
Wilmington Long Beach Unit - Fault Block V, VI, VII, VIII, VIII A & B, 90, 90 N & S, 98 Shallow Gas, Tar, Ranger, Terminal, Union Pacific, Ford 1 Drilling/Completion
Wilmington Non Unit-Fault Blocks V, Vl Tar, Ranger 1 Drilling/Completion
Winters Gas N/A All Productive Pools to Date 6 Drilling/Completion