API RP 64-2001 pdf free download

API RP 64-2001 pdf free download.Recommended Practice for Diverter Systems Equipment and Operations.
1.2 WELL CONTROL Opinions differ throughout the drilling industry concerning well control involving shallow gas. Appendix A of this publi- cation is intended to provide some technical understanding of what takes place when shallow gas is drilled and to promote a better understanding of the analysis technique fundamentals. This publication, API RP 64, serves as a companion to RP 59 Recommended Practice for Well Control Operations and RP 53 Recommended Practice for Blowout Prevention Equip- ment Systems for Drilling Wells . RP 59 establishes recom- mended operations to retain pressure control of the well under pre-kick conditions and recommended practices to be utilized during a kick. RP 53 establishes recommended prac- tices for the installation and testing of equipment for the anticipated well conditions and service. 1.3 DEEPWATER Operations in deepwater have special requirements with respect to well control and well control systems. This publica- tion discusses some of the special considerations with respect to diverter use in deepwater. The International Association of Drilling Contractors (IADC) has addressed diverter issues in the overall context of deepwater drilling in their publication IADC Deepwater Well Control Guidelines published in 1998. 1.4 LOW TEMPERATURE OPERATIONS Some drilling operations are conducted in areas of extreme low temperatures. Since current general practices usually result in protecting diverter systems equipment from that type environment, an applicable section has not been included for that service.
3 Definitions and Abbreviations 3.1 DEFINITIONS The following definitions are provided to help clarify and explain use of certain terms in this publication. Users should recognize that some of these terms can be used in other instances where the application or meaning may vary from the specific information provided in this publication. 3.1.1 accumulator system: A series of pressure vessels used to store hydraulic fluid charged with nitrogen gas under pressure for operation of blowout preventers (BOPs) and/or diverter system. 3.1.2 actuator: A device used to open or close a valve by means of applied manual, hydraulic, pneumatic, or electrical energy. 3.1.3 aerated fluid: Drilling fluid injected with air or gas in varying amounts for the purpose of reducing hydrostatic head. 3.1.4 air/gas drilling: Refer to Aerated Fluid, 6.3 and 6.3.3. 3.1.5 annular packing element: A doughnut shaped, rubber/elastomer element that effects a seal in an annular pre- venter or diverter. The annular packing element is displaced toward the bore center by the upward movement of an annu- lar piston. 3.1.6 abnormal pressure: Formation pore pressure in excess of that pressure resulting from the hydrostatic pressure exerted by a vertical column of water with salinity normal for the geographic area. 3.1.7 annular sealing device: Generally, a torus- shaped steel housing containing an annular packing element which facilitates closure of the annulus by constricting to seal on the pipe or kelly in the wellbore. Some annular sealing devices also facilitate shutoff of the open hole. 3.1.8 annulus: The space between the drill string and the inside diameter of the hole being drilled, the last string of cas- ing set in the well, or the marine riser.
3.1.16 bottoms-up gas: Gas that has risen to the surface from previously drilled gas-bearing formations. 3.1.17 bottom-supported drilling vessels: Drilling vessels which float to the desired drilling location and are either ballasted or jacked-up so that the vessel is supported by the soil on the bottom while in the drilling mode. Rigs of this type include platforms, submersibles, swamp barges, and jack-up drilling rigs. 3.1.18 broaching: Flow of fluids to the surface or to the sea bed through channels outside the casing. 3.1.19 casing shoe: A tool joint connected to the bottom of a string of casing designed to guide the casing past irregu- larities in the open hole; usually rounded at the bottom in shape and composed of drillable materials. 3.1.20 cleanout: A point in the flow line piping where access to the internal area of the pipe can be achieved to remove accumulated debris and drill cuttings. 3.1.21 closing unit: The assemblage of pumps, valves, lines, accumulators, and other items necessary to open and close the BOP equipment and diverter system. 3.1.22 conductor casing or conductor pipe (onshore and bottom-supported offshore installa- tions): A relatively short string of large diameter pipe that is set to keep the top of the hole open and provide a means of returning the upflowing drilling fluid from the wellbore to the surface drilling fluid system until the first casing string is set in the well. 3.1.23 conductor casing or conductor pipe (float- ing installations): The first string of pipe installed below the structural casing on which the wellhead and BOP equip- ment are installed.