API RP 65-3-2021 pdf free download

API RP 65-3-2021 pdf free download.Wellbore Plugging and Abandonment.
1 Scope 1.1 General Considerations This document provides guidance for the design, placement, and verification of cement plugs in wells to be temporarily or permanently abandoned, as well as remediation and verification of annular barriers. Wells temporarily abandoned (suspended) are intended to be re-entered in the future. The placement of barriers may depend on whether the well is to be temporarily or permanently abandoned. The information in this document is general in nature. Wellbore plugging and abandonment practices will vary with regulatory requirements, well type, and purpose. Sound engineering and operational practices should be applied to each wellbore plugging operation. Cement plug lengths are not considered in this document. 1.2 Well Construction and Abandonment Practices This document assumes that generally accepted well construction practices were followed during the installation of the cemented casings. As specified in API 65-2, properly designed casing strings cemented in place provide multiple barriers during well operations. Abandonment barriers may include those placed: — across any exposed casing/liner shoe; — in open hole; — above perforated intervals in cased hole; — at points where casing has been removed; — across liner tops; — above and below usable water sources; — above or below hydrocarbon bearing zones or other potential flow zones; — at the surface or mudline. See Figure 1 for an example of a permanent well abandonment.
2 Normative References The following referenced document is indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document applies (including any amendments/addenda/errata). API Standard 65-2, Isolating Potential Flow Zones During Well Construction For a listing of other documents associated with this publication, refer to the Bibliography. 2.1 Use of SI and U.S. Customary Units This document contains derived metric units (SI) and U.S. customary oilfield units. For the purposes of this document, the conversion between the systems is not exact and has been intentionally rounded to allow for ease of use in calibration and measurement. 3 Terms and Definitions, Symbols, and Abbreviations 3.1 Terms and Definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 barrier A component or practice that, if properly installed, contributes to the total system reliability by preventing liquid or gas flow. 3.1.2 bridge plug A mechanical device, usually equipped with elastomer elements, that acts as a temporary barrier. NOTE 1 A pumpable sealant may be placed below it before being placed in the wellbore, or above it after being activated. NOTE 2 It can be placed in the wellbore using a workstring, coiled tubing, or wireline. 3.1.3 cement Any material or combination of materials fluidized and pumped into the well to provide a seal. NOTE This includes pumpable sealants containing Portland cement, pozzolan blends, blast furnace slag blends, phosphate cement, hardening ceramics, resins, geo-polymers or other appropriate materials. 3.1.4 coiled tubing A long, continuous length of pipe wound on a spool. NOTE The pipe is straightened prior to pushing into a wellbore and rewound to coil the pipe back onto the storage spool pulling out of the wellbore. 3.1.5 dump bailer A wireline or slickline tool used to place small volumes of cement in a wellbore.
3.1.6 inside blowout preventer IBOP A tool used as a check valve inside the workstring. 3.1.7 mud Any wellbore fluid, including drilling fluids and completion fluids, containing organic or inorganic salts. 3.1.8 packer A mechanical device, usually equipped with elastomer elements, placed in the well using a workstring, coiled tubing, or wireline to act as a barrier. NOTE It may be either permanent or temporary/retrievable type. 3.1.9 plug A verifiable barrier located within the wellbore that may be mechanical or cement. 3.1.10 retainer A mechanical device, usually equipped with elastomer elements, that allows passage of fluid through a valve that can then be closed. NOTE It can be placed in the wellbore using a workstring, coiled tubing, or wireline. 3.1.11 through-tubing An intervention technique of running through an existing tubing string in the wellbore. NOTE 1 Normally, a packer is deployed using this technique, enabling placement in a larger-diameter open hole or casing located below the existing tubing string. NOTE 2 The packer is typically run on coiled tubing, wireline, or slickline. 3.1.12 workstring A generic term used to describe a tubular that is used to convey a treatment or for well service activities. NOTE Examples include jointed tubing, coiled tubing, or drill pipe.