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1 i TITLE 14 OIL AND GAS §1723.1 f'$ (Register ss.No.22---6-2eas) (p. 94.14.14.13) (b) Hole Fluid. Mud fluid having the proper weight and consistency to prevent movement of other fluids into the well bore shall be placed across all intervals not plugged with cement, and shall be surface poured into all open annuli. (c) Plugging by Bailer. Placing of a cement plug by bailer shall not be Kid at a depth greater than 3,000 feet.Water is the only permissible hole fluid in which a cement plug shall be placed by bailer. (d) Surface Pours. A surface cement-pour shall be permitted in an empty hole with a diameter of not less than 5 inches.Depth limitations shall be deter- mined on an individual well basis by the district deputy. (e) Blowout Prevention Equipment. Blowout prevention equipment may be required during plugging and abandonment operations. Any blowout pre- vention equipment and inspection requirements determined necessary by the district deputy shall appear on the approval to abandon issued by the division. (f) Junk in Hole. Diligent effort shall be made to recover junk when such junk may prevent proper abandonment either in open hole or inside casing.In the event that junk cannot be removed from the hole and fresh-saltwater contacts or oil or gas zones penetrated below cannot therefore be properly abandoned, cement shall be downsqueezed through orpast the junk and a 100-foot cement plug shall be placed on top of the junk. If it is not possible to downsqueeze through the junk,a 100-foot cement plug shall be placed on top of the junk. NOTE:Authority cited:Sections 3013 and 3106,Public Resources Code.Reference:Sec- tions 3219 and 3228,Public Resources Code. HISTORY: 1. Amendment filed 9-21-76;effective thirtieth day thereafter (Register 76,No.39). 2. New NOTE filed 12-28-84;effective thirtieth day thereafter (Register 84,No.52). 1723.1. Plugging of Oil or Gas Zones. (a) Plugging in an Open Hole. A cement plug shall be placed to extend from the total depth of the well or from at least 100 feet below the bottom of each oil or gas zone, to at least 100 feet above the top of each oil or gas zone. (b) Plugong in a Cased Hole. All perforations shall be plugged with ce- ment,and the plug shall extend at least 100 feet above the top of a landed liner, the uppermost perforations, the casing cementing point, the water shut-off holes, or the oil or gas zone, whichever is highest. (c) Special Requirements. Special requirements may be made for particu- lar types of hydrocarbon zones, such as: (1) Fractured shale or schist; (2) Massive sand intervals,particularly those with good vertical permeabili- ty; or (3) Any depleted productive interval more than 100 feet thick. As a minimum for an open-hole abandonment,the special requirement shall consist of a cement plug extending from at least 100 feet below the top of the oil or gas zone to at least 100 feet above the top of the zone. As a minimum for a cased-hole abandonment,the special requirement shall consist of a cement plug extending from at least 100 feet below the top of the zone to at least 100 feet above the top of the perforations,the top of the landed- liner, andedliner,the casing cementing point, the water shutoff holes,or the zone,which- ever is highest.