EP1375817A1 - Soupape d'étranglement de forage en sous-pression - Google Patents
Soupape d'étranglement de forage en sous-pression Download PDFInfo
- Publication number
- EP1375817A1 EP1375817A1 EP02291569A EP02291569A EP1375817A1 EP 1375817 A1 EP1375817 A1 EP 1375817A1 EP 02291569 A EP02291569 A EP 02291569A EP 02291569 A EP02291569 A EP 02291569A EP 1375817 A1 EP1375817 A1 EP 1375817A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- bottom hole
- variable aperture
- hole pressure
- drill string
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 46
- 239000012530 fluid Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000003247 decreasing effect Effects 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
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
- 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
- E21B21/085—Underbalanced techniques, i.e. where borehole fluid pressure is below formation 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
Definitions
- the present invention relation relates to drilling oil and gas wells. More particularly the invention relates to a technology known as underbalance drilling.
- Underbalance drilling is a technique that enables oil and gas wells to be drilled with a negative differential pressure between the reservoir pressure P R and the well bore pressure P wb , also called bottom hole pressure P ANN , i.e., P R > P ANN .
- P ANN bottom hole pressure
- the driller endeavors to keep the bottom hole pressure P ANN below the reservoir pressure P R .
- the bottom hole pressure P ANN may for example be monitored in real-time. Alternatively, if real-time monitoring is not available it may be inferred from fluid friction losses of drilling fluids injected in the drilling string and returning to the surface, and hydrostatic head.
- a further drawback in prior art relates to real time monitoring and lies in the fact that the transmission of the bottom hole pressure information may not take place instantaneously.
- the transmission delay may be as high as 30 seconds in the case of an electro-magnetic telemetry.
- the invention provides a method for underbalance drilling in a reservoir comprising operating a variable aperture of a downhole choke located at a downhole extremity of a drill string, to control a pressure differential between a drilling fluid pumped down the drill string from surface and flowing into the variable aperture of the choke, and the drilling fluid flowing out of the variable aperture, in order to achieve a negative differential pressure between a reservoir pressure and a bottom hole pressure at the downhole extremity of the drill string.
- the method comprises measuring the bottom hole pressure and adjusting automatically the variable aperture in order to keep the bottom hole pressure in a determined range.
- the values in the determined range are smaller than the reservoir pressure.
- the measuring of the bottom hole pressure is performed using a bottom hole instrument assembly located at the downhole extremity of the drill string.
- the method comprises measuring a momentary bottom hole pressure, and computing a target pressure depending at least on the measured momentary bottom hole pressure.
- the variable aperture is automatically adjusted in order to keep the bottom hole pressure in a predetermined range around the target pressure value.
- the method comprises increasing the variable aperture in case the bottom hole pressure is smaller than the target pressure value, thereby increasing the bottom hole pressure.
- the variable aperture is decreased in case the bottom hole pressure is greater than the target pressure value, and the bottom hole pressure thereby decreased.
- the invention provides a system for performing underbalance drilling in a reservoir using a drill string into which drilling fluid is pumped from the surface using a drilling fluid pump, the system comprising at a downhole extremity of the drill string a choke having a variable aperture through which the drilling fluid flows.
- system further comprises an actuator for varying the variable aperture and a controller that computes and sends a control signal to the actuator depending on a value of a bottom hole pressure in order to adjust the bottom hole pressure.
- system comprises a pressure sensor to measure the bottom hole pressure and output a value of the bottom hole pressure to the controller.
- system comprises storage means for storing a value of a target pressure, the controller using the target pressure to compute the control signal in order to adjust the bottom hole pressure in a determined range around the target pressure.
- the invention provides a choke device for use in a drilling string, having a variable aperture through which drilling fluid pumped into the drill string may flow.
- FIG. 1 a schematic representation shows a well bore 100, as used to drill an earth formation 101 for oil and gas extraction.
- a drill string 102 comprises an elongated tube-like body that is terminated by a drill bit and a bottom hole instrument assembly (not shown in Fig. 1).
- Drilling fluid 103 is pumped down the drill string 102, inside the tube, and from the surface by means of a drilling fluid pump 104. As the drilling fluid 103 exits the drill string it is returned to the surface mixed together with formation fluids, by flowing between the outer surface of the drill string 102 and a casing 105 of the well bore 100. Eventually the drilling fluid may be collected at a surface outlet 106.
- FIG. 2 a magnified view of the downhole drill string extremity contained in the dotted circle of Fig. 1 is shown.
- the schematic representation contains a drill bit 200 and a bottom hole instrument assembly 201.
- the bottom hole instrument assembly 201 includes at least a bottom hole pressure sensor (not shown in Fig. 2).
- a variable choke 202 is located at the bottom of the drill string, inside of the tube of the drill string 102 at proximity of the drill bit.
- the variable choke comprises a variable aperture 203 through which fluid inside the drill string may flow according to arrow 204.
- a pressure drop ⁇ P occurs between an input and an output of the variable choke.
- the pressure drop ⁇ P may be influenced by altering a size of the aperture.
- the bottom hole pressure P ANN is the pressure at the downhole extremity of the drill string (see Fig. 1).
- the bottom hole pressure P ANN may be measured using a pressure sensor of the bottom hole instruments assembly.
- variable choke comprises a variable aperture.
- the variable aperture 203 of choke 202 is controlled by an actuator 300 that is powered either from the surface in case hardwire communication is available (not shown in Fig. 3), or from a downhole power source, e.g. a battery 301.
- the actuator 300 of the variable aperture is controlled by a logic circuit 302 of the bottom hole instrument assembly.
- the logic circuit 302 continuously compares the bottom hole pressure P ANN to a target value P TARGET .
- the value of P ANN is monitored using the pressure sensor 304.
- the target value P TARGET is stored in the logical circuit and periodically updated from the surface operator.
- the update can for example be done using downwards telemetry using a communication module 303.
- the surface operator is periodically informed of the actual values of the bottom hole pressure P ANN which is measured using the pressure sensor and transmitted for example using upwards telemetry.
- the bottom hole pressure P ANN and other well parameters e.g., a net-flow value corresponding to a difference of the flow of fluid pumped into and the flow coming out of the well, may be used to compute the target pressure P TARGET .
- One example for a method used to compute the target pressure P TARGET is known from the international application published under WO02/06634A1.
- the term e used in the following represents a determined threshold that is used to avoid control oscillations.
- the threshold may be pre-set in the logic circuit.
- Fig. 4 This principle is schematically illustrated is Fig. 4.
- P ANN is measured using the appropriate pressure sensor of the bottom hole instrument assembly of the drill string and its value is subtracted from the target value P TARGET , the result being compared to ⁇ in box 401.
- an actuator control signal is output in box 402 to the actuator of the variable aperture to increase or decrease the variable aperture and influence the pressure drop at the variable choke 403.
- variable chokeaperture The method for controlling the variable chokeaperture described herein is given by way of example. A person skilled in the art could easily adapt or modify the method by introducing different or more sophisticated methods known from prior art for controlling the variable choke aperture and the resulting pressure differential.
- the present invention allows to maintain an underbalance pressure condition in an efficient way. More particularly the invention overcomes the problems of over corrections and oscillations encountered in prior art. This is achieved by suppression of significant time lag between measurement of the bottom hole pressure and regulation of the parameters leading to a desired value of the bottom hole pressure.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Details Of Valves (AREA)
- Manipulator (AREA)
- Lift Valve (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60209669T DE60209669D1 (de) | 2002-06-24 | 2002-06-24 | Drosselventil zum Unterdruckbohren |
AT02291569T ATE319911T1 (de) | 2002-06-24 | 2002-06-24 | Drosselventil zum unterdruckbohren |
EP02291569A EP1375817B1 (fr) | 2002-06-24 | 2002-06-24 | Soupape d'étranglement de forage en sous-pression |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02291569A EP1375817B1 (fr) | 2002-06-24 | 2002-06-24 | Soupape d'étranglement de forage en sous-pression |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1375817A1 true EP1375817A1 (fr) | 2004-01-02 |
EP1375817B1 EP1375817B1 (fr) | 2006-03-08 |
Family
ID=29716949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02291569A Expired - Lifetime EP1375817B1 (fr) | 2002-06-24 | 2002-06-24 | Soupape d'étranglement de forage en sous-pression |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1375817B1 (fr) |
AT (1) | ATE319911T1 (fr) |
DE (1) | DE60209669D1 (fr) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1898044A3 (fr) * | 2006-09-07 | 2008-05-28 | Weatherford/Lamb Inc. | Systèmes et procédés de forage à contrôle de pression annulaire |
WO2008120025A3 (fr) * | 2007-04-03 | 2008-12-04 | Weatherford Lamb | Station de connexion de dispositif de commande rotatif |
US7836946B2 (en) | 2002-10-31 | 2010-11-23 | Weatherford/Lamb, Inc. | Rotating control head radial seal protection and leak detection systems |
US7997345B2 (en) | 2007-10-19 | 2011-08-16 | Weatherford/Lamb, Inc. | Universal marine diverter converter |
CN102182439A (zh) * | 2011-04-26 | 2011-09-14 | 中国石油化工集团公司 | 一种平衡压力射孔负压返涌工艺 |
CN102213083A (zh) * | 2011-04-19 | 2011-10-12 | 中国石油化工集团公司 | 负压射孔与泵抽超负压生产一体化生产工艺 |
US8286734B2 (en) | 2007-10-23 | 2012-10-16 | Weatherford/Lamb, Inc. | Low profile rotating control device |
US8322432B2 (en) | 2009-01-15 | 2012-12-04 | Weatherford/Lamb, Inc. | Subsea internal riser rotating control device system and method |
US8347982B2 (en) | 2010-04-16 | 2013-01-08 | Weatherford/Lamb, Inc. | System and method for managing heave pressure from a floating rig |
US8826988B2 (en) | 2004-11-23 | 2014-09-09 | Weatherford/Lamb, Inc. | Latch position indicator system and method |
US8844652B2 (en) | 2007-10-23 | 2014-09-30 | Weatherford/Lamb, Inc. | Interlocking low profile rotating control device |
US8955619B2 (en) | 2002-05-28 | 2015-02-17 | Weatherford/Lamb, Inc. | Managed pressure drilling |
US9175542B2 (en) | 2010-06-28 | 2015-11-03 | Weatherford/Lamb, Inc. | Lubricating seal for use with a tubular |
CN105332687A (zh) * | 2014-08-06 | 2016-02-17 | 新疆格瑞迪斯石油技术股份有限公司 | 控压钻井控制系统中井口目标压力的设置方法及装置 |
US9359853B2 (en) | 2009-01-15 | 2016-06-07 | Weatherford Technology Holdings, Llc | Acoustically controlled subsea latching and sealing system and method for an oilfield device |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008148158A1 (fr) * | 2007-06-04 | 2008-12-11 | Cardinal Trading Company Pty Ltd | Appareil pour une utilisation lors du forage |
US8347983B2 (en) | 2009-07-31 | 2013-01-08 | Weatherford/Lamb, Inc. | Drilling with a high pressure rotating control device |
CN109915130B (zh) * | 2017-12-07 | 2022-02-01 | 中国石油天然气股份有限公司 | 一种试油装置及方法 |
US11566514B2 (en) * | 2020-10-19 | 2023-01-31 | Halliburton Energy Services, Inc. | Bottomhole choke for managed pressure cementing |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4630691A (en) * | 1983-05-19 | 1986-12-23 | Hooper David W | Annulus bypass peripheral nozzle jet pump pressure differential drilling tool and method for well drilling |
US5174392A (en) * | 1991-11-21 | 1992-12-29 | Reinhardt Paul A | Mechanically actuated fluid control device for downhole fluid motor |
US5355967A (en) * | 1992-10-30 | 1994-10-18 | Union Oil Company Of California | Underbalance jet pump drilling method |
WO2000004269A2 (fr) * | 1998-07-15 | 2000-01-27 | Deep Vision Llc | Systeme de forage de puits sous-marin permettant de reduire la pression dans le fond du trou |
WO2000050731A1 (fr) * | 1999-02-25 | 2000-08-31 | Weatherford/Lamb, Inc. | Procede de forage |
US6230824B1 (en) * | 1998-03-27 | 2001-05-15 | Hydril Company | Rotating subsea diverter |
WO2002006634A1 (fr) | 2000-07-19 | 2002-01-24 | Schlumberger Technology B.V. | Procede pour determiner des proprietes relatives a un puits en sous pression |
WO2002014649A1 (fr) * | 2000-08-15 | 2002-02-21 | Tesco Corporation | Outil et procede de forage en sous-pression |
-
2002
- 2002-06-24 DE DE60209669T patent/DE60209669D1/de not_active Expired - Lifetime
- 2002-06-24 EP EP02291569A patent/EP1375817B1/fr not_active Expired - Lifetime
- 2002-06-24 AT AT02291569T patent/ATE319911T1/de not_active IP Right Cessation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4630691A (en) * | 1983-05-19 | 1986-12-23 | Hooper David W | Annulus bypass peripheral nozzle jet pump pressure differential drilling tool and method for well drilling |
US5174392A (en) * | 1991-11-21 | 1992-12-29 | Reinhardt Paul A | Mechanically actuated fluid control device for downhole fluid motor |
US5355967A (en) * | 1992-10-30 | 1994-10-18 | Union Oil Company Of California | Underbalance jet pump drilling method |
US6230824B1 (en) * | 1998-03-27 | 2001-05-15 | Hydril Company | Rotating subsea diverter |
WO2000004269A2 (fr) * | 1998-07-15 | 2000-01-27 | Deep Vision Llc | Systeme de forage de puits sous-marin permettant de reduire la pression dans le fond du trou |
WO2000050731A1 (fr) * | 1999-02-25 | 2000-08-31 | Weatherford/Lamb, Inc. | Procede de forage |
WO2002006634A1 (fr) | 2000-07-19 | 2002-01-24 | Schlumberger Technology B.V. | Procede pour determiner des proprietes relatives a un puits en sous pression |
WO2002014649A1 (fr) * | 2000-08-15 | 2002-02-21 | Tesco Corporation | Outil et procede de forage en sous-pression |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8955619B2 (en) | 2002-05-28 | 2015-02-17 | Weatherford/Lamb, Inc. | Managed pressure drilling |
US8113291B2 (en) | 2002-10-31 | 2012-02-14 | Weatherford/Lamb, Inc. | Leak detection method for a rotating control head bearing assembly and its latch assembly using a comparator |
US8714240B2 (en) | 2002-10-31 | 2014-05-06 | Weatherford/Lamb, Inc. | Method for cooling a rotating control device |
US7836946B2 (en) | 2002-10-31 | 2010-11-23 | Weatherford/Lamb, Inc. | Rotating control head radial seal protection and leak detection systems |
US8353337B2 (en) | 2002-10-31 | 2013-01-15 | Weatherford/Lamb, Inc. | Method for cooling a rotating control head |
US7934545B2 (en) | 2002-10-31 | 2011-05-03 | Weatherford/Lamb, Inc. | Rotating control head leak detection systems |
US8701796B2 (en) | 2004-11-23 | 2014-04-22 | Weatherford/Lamb, Inc. | System for drilling a borehole |
US8826988B2 (en) | 2004-11-23 | 2014-09-09 | Weatherford/Lamb, Inc. | Latch position indicator system and method |
US9784073B2 (en) | 2004-11-23 | 2017-10-10 | Weatherford Technology Holdings, Llc | Rotating control device docking station |
US9404346B2 (en) | 2004-11-23 | 2016-08-02 | Weatherford Technology Holdings, Llc | Latch position indicator system and method |
US8939235B2 (en) | 2004-11-23 | 2015-01-27 | Weatherford/Lamb, Inc. | Rotating control device docking station |
US8408297B2 (en) | 2004-11-23 | 2013-04-02 | Weatherford/Lamb, Inc. | Remote operation of an oilfield device |
US7926593B2 (en) | 2004-11-23 | 2011-04-19 | Weatherford/Lamb, Inc. | Rotating control device docking station |
US7836973B2 (en) | 2005-10-20 | 2010-11-23 | Weatherford/Lamb, Inc. | Annulus pressure control drilling systems and methods |
US8122975B2 (en) | 2005-10-20 | 2012-02-28 | Weatherford/Lamb, Inc. | Annulus pressure control drilling systems and methods |
EP1898044A3 (fr) * | 2006-09-07 | 2008-05-28 | Weatherford/Lamb Inc. | Systèmes et procédés de forage à contrôle de pression annulaire |
AU2008234631B2 (en) * | 2007-04-03 | 2015-01-29 | Weatherford Technology Holdings, Llc | Rotating control device docking station |
WO2008120025A3 (fr) * | 2007-04-03 | 2008-12-04 | Weatherford Lamb | Station de connexion de dispositif de commande rotatif |
US7997345B2 (en) | 2007-10-19 | 2011-08-16 | Weatherford/Lamb, Inc. | Universal marine diverter converter |
US10087701B2 (en) | 2007-10-23 | 2018-10-02 | Weatherford Technology Holdings, Llc | Low profile rotating control device |
US8844652B2 (en) | 2007-10-23 | 2014-09-30 | Weatherford/Lamb, Inc. | Interlocking low profile rotating control device |
US9004181B2 (en) | 2007-10-23 | 2015-04-14 | Weatherford/Lamb, Inc. | Low profile rotating control device |
US8286734B2 (en) | 2007-10-23 | 2012-10-16 | Weatherford/Lamb, Inc. | Low profile rotating control device |
US8770297B2 (en) | 2009-01-15 | 2014-07-08 | Weatherford/Lamb, Inc. | Subsea internal riser rotating control head seal assembly |
US9359853B2 (en) | 2009-01-15 | 2016-06-07 | Weatherford Technology Holdings, Llc | Acoustically controlled subsea latching and sealing system and method for an oilfield device |
US8322432B2 (en) | 2009-01-15 | 2012-12-04 | Weatherford/Lamb, Inc. | Subsea internal riser rotating control device system and method |
US8863858B2 (en) | 2010-04-16 | 2014-10-21 | Weatherford/Lamb, Inc. | System and method for managing heave pressure from a floating rig |
US8347982B2 (en) | 2010-04-16 | 2013-01-08 | Weatherford/Lamb, Inc. | System and method for managing heave pressure from a floating rig |
US9260927B2 (en) | 2010-04-16 | 2016-02-16 | Weatherford Technology Holdings, Llc | System and method for managing heave pressure from a floating rig |
US9175542B2 (en) | 2010-06-28 | 2015-11-03 | Weatherford/Lamb, Inc. | Lubricating seal for use with a tubular |
CN102213083B (zh) * | 2011-04-19 | 2013-10-23 | 中国石油化工集团公司 | 负压射孔与泵抽超负压生产一体化生产工艺 |
CN102213083A (zh) * | 2011-04-19 | 2011-10-12 | 中国石油化工集团公司 | 负压射孔与泵抽超负压生产一体化生产工艺 |
CN102182439A (zh) * | 2011-04-26 | 2011-09-14 | 中国石油化工集团公司 | 一种平衡压力射孔负压返涌工艺 |
CN102182439B (zh) * | 2011-04-26 | 2013-09-18 | 中国石油化工集团公司 | 一种平衡压力射孔负压返涌工艺 |
CN105332687A (zh) * | 2014-08-06 | 2016-02-17 | 新疆格瑞迪斯石油技术股份有限公司 | 控压钻井控制系统中井口目标压力的设置方法及装置 |
CN105332687B (zh) * | 2014-08-06 | 2018-05-22 | 新疆格瑞迪斯石油技术股份有限公司 | 控压钻井控制系统中井口目标压力的设置方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
DE60209669D1 (de) | 2006-05-04 |
ATE319911T1 (de) | 2006-03-15 |
EP1375817B1 (fr) | 2006-03-08 |
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