Cal. Code Regs. tit. 14 § 1722.4
Surface casing shall be cemented with sufficient cement to fill the annular space from the shoe to the surface. Intermediate and production casings, if not cemented to the surface, shall be cemented with sufficient cement to fill the annular space to at least 500 feet above oil and gas zones, and anomalous pressure intervals. Sufficient cement shall also be used to fill the annular space to at least 100 feet above the base of the freshwater zone, either by lifting cement around the casing shoe or cementing through perforations or a cementing device placed at or below the base of the freshwater zone. All casing shall be cemented in a manner that ensures proper distribution and bonding of cement in the annular spaces. The appropriate Division district deputy may require a cement bond log, temperature survey, or other survey to determine cement fill behind casing. If it is determined that the casing is not cemented adequately by the primary cementing operation, the operator shall recement in such a manner as to comply with the above requirements. If supported by known geologic conditions, an exception to the cement placement requirements of this section may be allowed by the appropriate Division district deputy.
Cal. Code Regs. Tit. 14, § 1722.4
2. Editorial correction of NOTE filed 12-28-84; effective thirtieth day thereafter (Register 84, No. 52).
3. Amendment of section and NOTE filed 8-4-95; operative 9-3-95 (Register 95, No. 31).
4. Change without regulatory effect amending section filed 12-26-2006 pursuant to section 100, title 1, California Code of Regulations (Register 2006, No. 52).
Note: Authority cited: Section 3013, Public Resources Code. Reference: Sections 3106, 3220 and 3222- 3224, Public Resources Code.
2. Editorial correction of Note filed 12-28-84; effective thirtieth day thereafter (Register 84, No. 52).
3. Amendment of section and Note filed 8-4-95; operative 9-3-95 (Register 95, No. 31).
4. Change without regulatory effect amending section filed 12-26-2006 pursuant to section 100, title 1, California Code of Regulations (Register 2006, No. 52).