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US20170370153A1 - Piston assembly to reduce annular pressure buildup - Google Patents

Piston assembly to reduce annular pressure buildup Download PDF

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Publication number
US20170370153A1
US20170370153A1 US15/536,606 US201515536606A US2017370153A1 US 20170370153 A1 US20170370153 A1 US 20170370153A1 US 201515536606 A US201515536606 A US 201515536606A US 2017370153 A1 US2017370153 A1 US 2017370153A1
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United States
Prior art keywords
pressure
wellbore
piston
annuli
amount
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US15/536,606
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English (en)
Inventor
Ravinder GAHLAWAT
Ganesh S. PANGU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Halliburton Energy Services Inc
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Halliburton Energy Services Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Assigned to HALLIBURTON ENERGY SERVICES, INC. reassignment HALLIBURTON ENERGY SERVICES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GAHLAWAT, Ravinder, PANGU, GANESH S.
Publication of US20170370153A1 publication Critical patent/US20170370153A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • E21B7/128—Underwater drilling from floating support with independent underwater anchored guide base
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
    • E21B17/1035—Wear protectors; Centralising devices, e.g. stabilisers for plural rods, pipes or lines, e.g. for control lines
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
    • E21B23/10—Tools specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/035—Well heads; Setting-up thereof specially adapted for underwater installations
    • E21B33/0355—Control systems, e.g. hydraulic, pneumatic, electric, acoustic, for submerged well heads
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0021—Safety devices, e.g. for preventing small objects from falling into the borehole
    • E21B47/0001—
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/001—Survey of boreholes or wells for underwater installation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/04—Casing heads; Suspending casings or tubings in well heads
    • E21B33/047—Casing heads; Suspending casings or tubings in well heads for plural tubing strings
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/101—Setting of casings, screens, liners or the like in wells for underwater installations
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/06—Measuring temperature or pressure

Definitions

  • a wellbore can include multiple annuli having trapped fluids. Pressure can build up in the annuli because of heating of these fluids, which can cause damage to wellbore components if the pressure is not reduced.
  • a piston assembly can be used to reduce the amount of pressure in the annuli.
  • FIG. 1 is cross-sectional view of a well system showing multiple annuli and a piston assembly.
  • FIG. 2B is an enlarged cross-sectional view of the piston assembly after movement of the piston.
  • Oil and gas hydrocarbons are naturally occurring in some subterranean formations.
  • a subterranean formation containing oil and/or gas is referred to as a reservoir.
  • a reservoir can be located under land or off shore. Reservoirs are typically located in the range of a few hundred feet (shallow reservoirs) to a few tens of thousands of feet (ultra-deep reservoirs).
  • a wellbore is drilled into a reservoir or adjacent to a reservoir.
  • the oil, gas, or water produced from a reservoir is called a reservoir fluid.
  • a “fluid” is a substance having a continuous phase that tends to flow and to conform to the outline of its container when the substance is tested at a temperature of 71° F. (22° C.) and a pressure of one atmosphere “atm” ( 0 . 1 megapascals “MPa”).
  • a fluid can be a liquid or gas.
  • a well can include, without limitation, an oil, gas, or water production well, or an injection well.
  • a “well” includes at least one wellbore.
  • a wellbore can include vertical, inclined, and horizontal portions, and it can be straight, curved, or branched.
  • the term “wellbore” includes any cased, and any uncased, open-hole portion of the wellbore.
  • a near-wellbore region is the subterranean material and rock of the subterranean formation surrounding the wellbore.
  • a “well” also includes the near-wellbore region. The near-wellbore region is generally considered to be the region within approximately 100 feet radially of the wellbore.
  • “into a well” means and includes into any portion of the well, including into the wellbore or into the near-wellbore region via the wellbore.
  • a portion of a wellbore can be an open hole or cased hole.
  • a tubing string can be placed into the wellbore.
  • the tubing string allows fluids to be introduced into or flowed from a remote portion of the wellbore.
  • a casing is placed into the wellbore that can also contain a tubing string. It is also common for more than one casing and tubing string to be installed within a wellbore.
  • the multiple casings can be placed inside of one another and may not extend the same distance within the wellbore.
  • a wellbore can contain an annulus.
  • annulus examples include, but are not limited to: the space between the wellbore and the outside of a tubing string in an open-hole wellbore; the space between the wellbore and the outside of a casing in a cased-hole wellbore; and the space between the inside of a casing and the outside of a tubing string in a cased-hole wellbore.
  • annuli When there are multiple casings and/or tubing strings, there can also be multiple annuli.
  • a wellbore can be separated into one or more wellbore intervals.
  • One way to create wellbore intervals is by bringing the top of a cement column from a subsequent tubing string up inside the annulus above the previous casing shoe.
  • annular pressure buildup can occur.
  • Annular Pressure Buildup (APB) is one of many challenging issues in the oil and gas industry. APB occurs when annular fluids that are trapped between the column of cement and the surface of the land become heated due to production or higher formation temperatures. The annular fluids then expand and can exert pressure on the casing. This condition is present in all producing wells, but is most evident in deep water wells.
  • Deep water wells are likely to be vulnerable to annular pressure buildup because of the cold temperature of the displaced fluid, in contrast to elevated temperature of the production fluid during production. This big change in temperature during production can increase the pressure in the annulus rather rapidly. Sometimes the pressure can become so great as to collapse the inner string or even rupture the outer string or casings, thereby destroying the well.
  • a wellhead can provide access to some or all of the wellbore annuli, and an observed pressure increase can be quickly bled off via the wellhead.
  • most subsea wellhead installations do not have access to each wellbore annulus.
  • other attempts to solve the problem of annular pressure build up include: use of a syntactic crushable foam wrap; leaving the cement column short of previous casings; providing a leak path or bleed port; use of a compressible fluid in the inaccessible annulus; different casing designs; and full column height cementing.
  • cement channeling can occur due to poor mud displacement in the case of cement column short of previous casings, very high costs can be incurred in the case of enhanced casing design and full column height cementing, and a foam wrap can only be used one time to bleed off the excess pressure.
  • a piston assembly can be used to bleed off the excess pressure from one or more wellbore annuli.
  • the one or more annuli can be connected via a common tubular that is connected to the piston assembly. Any excess pressure would be exerted on a piston of the piston assembly to prevent the pressure from building up within the annuli.
  • a system for preventing annular pressure buildup comprises: a wellbore; two or more annuli located within the wellbore; a piston assembly located adjacent to a wellhead of the wellbore; and a pipe system that connects the two or more annuli in parallel to the piston assembly, wherein when the amount of pressure in the pipe system exceeds a predetermined amount, then a piston of the piston assembly moves whereby the movement reduces the amount of pressure in the two or more annuli.
  • a method of reducing the amount of pressure in two or more annuli of a wellbore comprises: connecting the two or more annuli in parallel to a piston assembly via a pipe system, wherein the piston assembly is located adjacent to a wellhead of the wellbore; and allowing a piston of the piston assembly to move when the amount of pressure in the pipe system exceeds a predetermined amount, wherein the movement reduces the amount of pressure in the two or more annuli.
  • FIG. 1 depicts a well system 10 .
  • the well system 10 can include at least one wellbore 21 .
  • the wellbore 21 can penetrate a subterranean formation 20 .
  • the subterranean formation 20 can be a portion of a reservoir or adjacent to a reservoir.
  • the well system 10 can be an off-shore system.
  • the off-shore system can include, for example, an off-shore platform 100 that is located within a body of water 11 .
  • the well system 10 can include a wellhead 13 that is located on the sea floor 12 .
  • a production tubing 22 is inserted into the body of water 11 and extends through the water to the sea floor 12 of the body of water.
  • the sea floor 12 is the surface of the sub-water land.
  • the body of water and the wellbore can be several hundred to several thousands of feet deep.
  • the term “body of water” includes, without limitation, either formed by nature or man-made, a river, a pond, a lake, a gulf, a canal, a reservoir, a retention pond, or an ocean.
  • water means the water located within the body of water.
  • the water can be freshwater, salt water, effluent, produced or flowback water, or brackish water.
  • the well system 10 can also include other components not depicted in the drawings or described herein that are commonly included in an off-shore drilling system.
  • the wellbore 21 can include one or more wellbore intervals.
  • the wellbore intervals can correspond to one or more zones of the subterranean formation 20 .
  • the wellbore intervals can be formed via the use of isolation devices, for example, packers 24 , cement 31 , balls and seats, etc. (not shown).
  • the well system 10 also includes two or more annuli.
  • the well system 10 can include two or more casing strings 23 installed within the wellbore 21 .
  • the casing strings 23 for example as depicted in FIG. 1 , can be various lengths.
  • the well system 10 can include a first annulus 25 located between the outside of the tubing string 22 and the inside of a first casing string.
  • a second annulus 26 can be located between the outside of the first casing string and the inside of a second casing string.
  • a third annulus 27 can be located between the outside of the second casing string and the inside of a third casing string.
  • the casing strings 23 can be partially or wholly cemented in the wellbore 21 via cement 31 .
  • Partially cemented means that the cement composition does not completely fill the annulus in which the cement is placed; whereas, wholly cemented means that the cement composition does completely fill the annulus in which the cement is placed.
  • at least two annuli are not completely filled with the cement 31 .
  • the two or more annuli can contain a wellbore fluid 32 .
  • the two or more annuli can contain the wellbore fluid 32 in addition to the cement 31 .
  • the wellbore fluid 32 can be a fluid that is introduced by an operator or a reservoir fluid.
  • the wellbore fluid 32 can exert a certain amount of pressure within the two or more annuli.
  • the amount of pressure can be exerted on the outside and inside of the casing strings 23 and/or tubing string 22 making up the annuli.
  • the amount of pressure can also increase over time.
  • the amount of pressure can increase due to an increase in temperature of the wellbore fluid 32 via production of a reservoir fluid or the surrounding subterranean formation temperature.
  • the well system 10 includes a pipe system that connects the two or more annuli in parallel to a piston assembly 200 .
  • the pipe system can include two or more pipes that are connected to a common pipe 40 .
  • the two or more pipes can correspond to the two or more annuli.
  • the two or more annuli are accessible from the sea floor 12 for being able to connect a pipe to the accessible annulus.
  • a first pipe 41 can be connected to the first annulus 25
  • a second pipe 42 can be connected to the second annulus 26
  • a third pipe 43 can be connected to the third annulus 27 .
  • the pipes can be connected to each annulus in any manner that is known to those skilled in the art.
  • the amount of pressure in each annulus of the well system can be the same or different.
  • the initial amount of pressure from each of the pipes is the initial amount of pressure from the respective annuli that are connected to the pipes.
  • the initial amount of pressure in the first pipe 41 will be the amount of pressure from the first annulus 25
  • the initial amount of pressure in the second pipe 42 will be the amount of pressure from the second annulus 26 , etc.
  • Each of these pressures in the pipes of the pipe system will feed into the common pipe 40 .
  • the pressure will become the same in the annuli 25 , 26 , 27 , corresponding pipes 41 , 42 , 43 , and the common pipe 40 of the network because of the continuity of fluids.
  • the well system 10 can also include one or more annuli that are inaccessible (not shown) from the sea floor.
  • Any of the annuli can include a rupture disk 28 or other fluid flow restriction device that restricts fluid flow past the device but fails above a certain pressure rating.
  • the rupture disk can block fluid flow past the disk when the pressure of the wellbore fluid 32 is below a certain value. Then, when the pressure equals or exceeds the certain value, the disk can rupture, thus allowing the wellbore fluid to flow out of the annulus and into an adjacent annulus.
  • the pressure at which the disk ruptures is below the pressure at which damage to the casing strings or tubing strings forming the annulus would occur. In this manner, the strings do not become damaged by the pressure from the wellbore fluid.
  • the common pipe 40 of the pipe system is connected to the piston assembly 200 .
  • the piston assembly 200 is located adjacent to the wellhead 13 of the wellbore. Accordingly, the piston assembly 200 can be located on the sea floor 12 .
  • the piston assembly 200 includes a housing 201 .
  • the housing 201 can be made of a variety of materials and can be a variety of shapes.
  • the housing 201 can be made out of metals, metal alloys, plastics, non-corrodible materials, etc.
  • the piston assembly 200 also includes a piston 202 .
  • the piston 202 can define two chambers within the housing 201 .
  • the common pipe 40 can feed into a first chamber 204 on one side of the piston 202 .
  • the piston 202 can move within the housing 201 . Movement of the piston 202 can inversely change the dimensions of the first and second chambers 204 / 205 . As the piston movement increases the dimensions of the first chamber 204 the dimensions of the second chamber 205 are reduced and vice versa.
  • the compressible gas 203 within the second chamber 205 will compress as the piston moves to reduce the dimensions of the second chamber 205 , for example as depicted in FIG. 2B .
  • the predetermined amount of pressure at which the piston 202 moves within the housing 201 can be based on anticipated conditions of the oil and gas operation.
  • the casing strings 23 can have a pressure rating at which above that pressure then damage could occur to the casing strings.
  • the predetermined amount of pressure can be less than the pressure rating of the casing strings so the piston would move to reduce the pressure in the annuli prior to the casing strings becoming damaged.
  • the predetermined amount of pressure can also be a pressure less than the amount of pressure at which wellbore components become damaged.
  • the amount of movement of the piston thereby increasing the dimensions of the first chamber 204 , causes a certain amount of pressure in the pipe assembly and the two or more annuli to decrease.
  • the amount of reduction in the pressure in the two or more annuli can be calculated based on a variety of factors including, but not limited to, the temperature of the wellbore fluid 32 within the annuli, the size of the piston assembly 200 including the size of the housing 201 making up the first chamber 204 and second chamber 205 , the compressibility of the compressible gas 203 , and the initial amount of pressure in the two or more annuli prior to reduction.
  • the piston 202 can move back towards the inlet into the first chamber 204 . This movement decreases the dimensions of the first chamber 204 and increases the dimensions of the second chamber 205 . Should the pressure in the pipe system increase again above the predetermined amount, then the piston 202 would move again to reduce the pressure in the two or more annuli.
  • well system 10 is illustrated in the drawings and is described herein as merely one example of a wide variety of well systems in which the principles of this disclosure can be utilized. It should be clearly understood that the principles of this disclosure are not limited to any of the details of the well system 10 , or components thereof, depicted in the drawings or described herein. Furthermore, the well system 10 can include other components not depicted in the drawing.
  • compositions and methods are described in terms of “comprising,” “containing,” or “including” various components or steps, the compositions and methods also can “consist essentially of” or “consist of” the various components and steps. It should be understood that, as used herein, “first,” “second,” “third,” etc., are arbitrarily assigned and are merely intended to differentiate between two or more annuli, casing strings, wellbore intervals, etc., as the case may be, and does not indicate any particular orientation or sequence.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Geophysics (AREA)
  • Earth Drilling (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Braking Arrangements (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Actuator (AREA)
US15/536,606 2015-01-16 2015-01-16 Piston assembly to reduce annular pressure buildup Abandoned US20170370153A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2015/011855 WO2016114798A1 (en) 2015-01-16 2015-01-16 Piston assembly to reduce annular pressure buildup

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US20170370153A1 true US20170370153A1 (en) 2017-12-28

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US (1) US20170370153A1 (es)
AU (1) AU2015377209B2 (es)
BR (1) BR112017014448A2 (es)
CA (1) CA2969789A1 (es)
MX (1) MX2017009283A (es)
NO (1) NO20171186A1 (es)
WO (1) WO2016114798A1 (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111042769A (zh) * 2019-12-10 2020-04-21 湛江市新享达油田设备有限公司 油气井密闭空间氮气压缩增容吸压装置及方法
US11459851B2 (en) 2020-08-25 2022-10-04 Saudi Arabian Oil Company Relieving high annulus pressure using automatic pressure relief system
US11708736B1 (en) 2022-01-31 2023-07-25 Saudi Arabian Oil Company Cutting wellhead gate valve by water jetting

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WO2018170038A2 (en) * 2017-03-14 2018-09-20 Antelope Oil Tool & Mfg. Co., Llc Expansion chamber
WO2019038643A1 (en) * 2017-08-23 2019-02-28 Vallourec Tube-Alloy, Llc DEVICE AND METHOD FOR MITIGATING ANNULAR PRESSURE ACCUMULATION IN AN ANNULAR SPACE FOR WELLBORE TUBING
CN112832749B (zh) * 2021-03-23 2022-10-28 中海石油深海开发有限公司 一种水下井口油套环空压力控制系统及方法

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US5273112A (en) * 1992-12-18 1993-12-28 Halliburton Company Surface control of well annulus pressure
US5295534A (en) * 1991-04-15 1994-03-22 Texaco Inc. Pressure monitoring of a producing well
US20010027865A1 (en) * 2000-02-02 2001-10-11 Wester Randy J. Non-intrusive pressure measurement device for subsea well casing annuli
US20050092523A1 (en) * 2003-10-30 2005-05-05 Power Chokes, L.P. Well pressure control system
US20110284209A1 (en) * 2010-05-20 2011-11-24 Carpenter Robert B System And Method For Regulating Pressure Within A Well Annulus
US20120017673A1 (en) * 2009-01-09 2012-01-26 Oivind Godager Pressure Management System For Well Casing Annuli

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US6484816B1 (en) * 2001-01-26 2002-11-26 Martin-Decker Totco, Inc. Method and system for controlling well bore pressure
US7191830B2 (en) * 2004-02-27 2007-03-20 Halliburton Energy Services, Inc. Annular pressure relief collar
US8757272B2 (en) * 2010-09-17 2014-06-24 Smith International, Inc. Method and apparatus for precise control of wellbore fluid flow

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Publication number Priority date Publication date Assignee Title
US4230187A (en) * 1979-06-19 1980-10-28 Trw Inc. Methods and apparatus for sensing wellhead pressure
US5295534A (en) * 1991-04-15 1994-03-22 Texaco Inc. Pressure monitoring of a producing well
US5273112A (en) * 1992-12-18 1993-12-28 Halliburton Company Surface control of well annulus pressure
US20010027865A1 (en) * 2000-02-02 2001-10-11 Wester Randy J. Non-intrusive pressure measurement device for subsea well casing annuli
US20050092523A1 (en) * 2003-10-30 2005-05-05 Power Chokes, L.P. Well pressure control system
US20120017673A1 (en) * 2009-01-09 2012-01-26 Oivind Godager Pressure Management System For Well Casing Annuli
US20110284209A1 (en) * 2010-05-20 2011-11-24 Carpenter Robert B System And Method For Regulating Pressure Within A Well Annulus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111042769A (zh) * 2019-12-10 2020-04-21 湛江市新享达油田设备有限公司 油气井密闭空间氮气压缩增容吸压装置及方法
US11459851B2 (en) 2020-08-25 2022-10-04 Saudi Arabian Oil Company Relieving high annulus pressure using automatic pressure relief system
US11708736B1 (en) 2022-01-31 2023-07-25 Saudi Arabian Oil Company Cutting wellhead gate valve by water jetting

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MX2017009283A (es) 2017-10-11

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