EP0267096A1 - Werkzeug zur Messung des Drucks in einer Ölbohrung - Google Patents

Werkzeug zur Messung des Drucks in einer Ölbohrung Download PDF

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Publication number
EP0267096A1
EP0267096A1 EP87402349A EP87402349A EP0267096A1 EP 0267096 A1 EP0267096 A1 EP 0267096A1 EP 87402349 A EP87402349 A EP 87402349A EP 87402349 A EP87402349 A EP 87402349A EP 0267096 A1 EP0267096 A1 EP 0267096A1
Authority
EP
European Patent Office
Prior art keywords
tool
tool according
orifices
pressure sensor
pressure
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
Application number
EP87402349A
Other languages
English (en)
French (fr)
Other versions
EP0267096B1 (de
Inventor
Patrice Corjon
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.)
Flopetrol Services Inc
Original Assignee
Flopetrol 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
Application filed by Flopetrol Services Inc filed Critical Flopetrol Services Inc
Publication of EP0267096A1 publication Critical patent/EP0267096A1/de
Application granted granted Critical
Publication of EP0267096B1 publication Critical patent/EP0267096B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/06—Measuring temperature or 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
    • 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
    • E21B23/004—Indexing systems for guiding relative movement between telescoping parts of downhole tools
    • E21B23/006—"J-slot" systems, i.e. lug and slot indexing mechanisms
    • 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
    • E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools

Definitions

  • the present invention relates to a tool for measuring the pressure created in an oil well by the underground formation where the well is drilled, the latter being delimited by a casing inside which a production column has been installed comprising a section forming a sliding jacket circulation valve, this valve being able to put in communication, on command, the interior space of the production column with the annular space included between it and the casing by facing orifices made in the wall of said section and in the sliding jacket.
  • Pressure measurements in oil wells provide important information about the characteristics of the oil formations where they are drilled.
  • the pressure drop caused by a sudden voluntary increase in surface flow makes it possible to calculate the production index, i.e. the production capacity of the well as a function of the fall in pressure.
  • Knowledge of this index which depends on the permeability and the dimensions of the reservoir that constitutes the underground formation, makes it possible to adjust the production rate to its optimal value.
  • the measurement - at a determined depth - of the pressure created by the underground formation which is that which prevails in the abovementioned annular space, accompanied by the measurement - at the same depth - pressure in the column of production, which depends on the pumping regime, makes it possible to assess the efficiency of the pump used and to detect any damage manifested by abnormal variations in the efficiency.
  • the pressure created by the underground formation must be measured in the annular space between the casing and the production column.
  • the height of the petroleum column in said annular space is directly linked to this pressure, and it has been proposed to measure this height from the time of the return wave of an acoustic wave emitted on the surface of the ground and reflecting on the air-oil interface of this column.
  • packing a tight packing
  • the present invention relates to a tool designed to be lowered inside the production column and locked at the level of the circulation valve section. that it includes.
  • This tool comprises means for tightly sealing - with respect to the pressure prevailing in the production column - the orifices of said valve, brought to each other, with a pressure sensor, so that the latter receives the application, via said orifices and said sealed connection means, of the pressure prevailing in the abovementioned annular space at said section.
  • the tool is composed of two coaxial elements which can slide telescopically, namely a first tubular element with an outside diameter slightly smaller than the inside diameter of the production column, and a second element which can slide over a limited stroke in an internal range of the first element and comprising a sealed connection conduit of the pressure sensor to said orifices.
  • This arrangement allows, by retracting the second element in the first, to clear the top of the latter in order to facilitate its gripping by a descent or ascent tool, possibly via an anchoring mandrel to which the first element subject and which is operable using a lowering or recovery tool and lockable in the section forming the circulation valve of the production column.
  • the second element can take, with respect to the first element, on the one hand a low position determined by an end-of-travel stop, where it is entirely contained in the first element, and, on the other hand, a high position also determined by an end of travel stop, where the said conduit is placed in communication with the orifices of the circulation valve.
  • this conduit opens onto the external surface of the second element in a location such that, when this element is in the high position, the outlet of the conduit is located in the middle region of the internal bearing of the first element and is in communication with at least one channel pierced through the wall of the first element and communicating itself, via an annular space comprised between the outer surface of the first element and the inner surface of the sliding jacket, with the orifices of that and the wall of the section forming a circulation valve.
  • the aforementioned conduit should open into an annular groove hollowed out in the internal bearing of the first element and communicating with the one or more channels crossing the wall of this element.
  • the pressure sensor is carried by the tool, preferably being removably mounted thereon, so that the tool and the pressure sensor can be operated independently.
  • the second element of the tool comprises, at its upper part, a tubular junction end which leads to said connection conduit and which makes it possible to connect thereto, so waterproof, the pressure sensor.
  • the latter is preferably coupled to the nozzle by a separable connection device comprising fingers cooperating with a system of J-grooves and allowing the coupling, then the uncoupling of the pressure sensor and the nozzle by command from the ground surface using a hanging cable.
  • its second element In order to allow the oil to pass through the tool in place in the production column, its second element should have a tubular lower part at the top of which at least one orifice is pierced. Furthermore, the equalization of pressures in the production column during the withdrawal of the tool can be obtained by providing that the stop defining the low position of the second element is constituted by a ring fixed in the first element in a non-definitive manner, which closes at least one drilled orifice through the wall of the first element and that this ring, expelled at the end of use of the tool using a recovery tool designed to force the second element to descend relative to the first, uncovers said orifice, which then connects the spaces outside and inside the first element.
  • FIG. 1 represents an oil well delimited by a casing 10, in which a production column 11 has been installed.
  • the casing 10 has perforations 12 at level of the oil formation 13 where the well is drilled, through which the oil enters. This, due to its pressure, rises to a level N (located below the surface of the ground 18) in the annular space 15 between the casing 10 and the production column 11.
  • N located below the surface of the ground 18
  • At the foot of the latter is fitted with a submerged pump 16 (fitted with a non-return valve) which delivers the oil, via said column, to the surface, where it is available on a Christmas tree 17.
  • the annular space 15 is closed off by a circular seal or "packer" 19 at which a safety valve 20 can be arranged.
  • the production column 11 comprises a section with SSD circulation valve using a sliding jacket 21, the operation of which allows, by coincidence of orifice 22, 23 which the walls of the SSD section respectively extend that of the production column 11 and the wall of the sliding shirt 21, to create a communication channel between the interior of the production column 11 and the annular space 15 (this possibility being used mainly when it is desired to "kill" the well by filling it with mud).
  • the tool according to the invention essentially consists of two elements 1, 2, of generally tubular shape, arranged coaxially around the axis A of the production column 11.
  • the element 1 can slide the element 1, of larger diameter, while the element 2, of smaller diameter, can slide inside the element 1.
  • the external surface of the element 1, cylindrical of revolution has a chosen diameter, so that it can slide with gentle friction in two internal sealing surfaces 24, 25 offered by the SSD section of the production column on either side of the movable jacket 21, these spans further limiting the sliding stroke thereof.
  • the upper surface 25 has an annular groove 26 (FIG. 2) in which are locked locking keys 27 belonging to an anchoring mandrel 28 secured to the upper end of the element 1.
  • the latter comprises, in the region of its lower end, an annular seal 38 which, when the element 1 is immobilized in the SSD section by the anchoring mandrel 28 locked by means of its keys 27 (FIG. 4), cooperates with the lower sealing surface 24 of the SSD section.
  • annular seal 38 which, when the element 1 is immobilized in the SSD section by the anchoring mandrel 28 locked by means of its keys 27 (FIG. 4), cooperates with the lower sealing surface 24 of the SSD section.
  • the sliding sleeve 21 is housed in the annular space 29 delimited by the internal surface of the SSD section, the surfaces 24 and 25 of the latter and the external surface of the element 1.
  • the external diameter of the sleeve 21 corresponds to internal diameter of the SSD section between said spans; on the other hand, the inside diameter of the jacket is greater than the outside diameter of the element 1, so that an annular space 30 appears between the element 1 and the jacket 21.
  • the orifices 22 of the SSD section are of course located between the surfaces 24 and 25, while the position of the orifices 23 of the jacket 21 over the length thereof and this length itself are chosen so that, depending on the extreme longitudinal position occupied by the jacket 21 in the section SSD, either these orifices come opposite the orifices 22 of the latter, putting the space 30 into communication with the space 15 surrounding the SSD section, or these latter orifices 22 are closed by the cylindrical wall 21a of the jacket 21. That -This comprises, at each of its ends, an internal annular rim 21b, 21c giving grip to an actuating member which allows it to slide up or down.
  • Element 2 essentially comprises a hollow cylindrical part 2a and, extending this at its upper end, a nozzle 2b for connection to a pressure sensor 31.
  • the part 2a the outside diameter of which is slightly smaller than the inside diameter of the element 1, can slide longitudinally in the latter while being guided therein by an internal bearing 1a forming a projection on the inside surface of the element 1.
  • the excursion of the element 1 is limited, upwards, by an external flange 2c which comprises the part 2a at its lower end and which abuts against said internal bearing 1a of the part 1, and, downwards, by a ring 32 fixed inside the element 1 and against which abuts the lower end of the element 2 ( Figure 3).
  • the part 2a is pierced with orifices 33 which allow the circulation of the oil through the tool, via the interior spaces of the element 1 and of said part 2a of the element 2.
  • the internal surface 1a of the element 1 is hollowed out with an annular groove 1b open towards the interior of the element and connected to the space surrounding it by channels 1c drilled radially through its cylindrical wall.
  • the element 2 comprises a conduit 35 which is on the one hand connected to a canal2d pierced axially in its end piece 2b and on the other hand opens, through the cylindrical wall of its part 2a, into the annular groove 1b mentioned above when the element 2 is in high stop inside the part 1, as shown in FIG. 4.
  • the annular space 30, communicating via the orifices 23 and 22 with the space 15 which surrounds the SSD section, is in connection, via the channels 1c, the groove 1b and the conduit 35, with the axial channel 2d of the end piece 2c, whatever the orientation of the element 2 around the axis A.
  • the end piece 2c it can be connected to the pressure sensor 31 by means of a junction socket 3 tightly connected by its upper end to said sensor and by an internal bearing 3a to the end piece 2b.
  • the sleeve 3 can be hung on the end piece 2b or be detached at will by simple axial displacement printed thereon via a cable of suspension 36 to which it is attached, as will be described later.
  • the tool 1, 2 When it is desired to make pressure measurements in the well, the tool 1, 2 is lowered into the production column 11 to be stationed at the level of the section forming the SSD circulation valve.
  • the sliding sleeve 21 thereof normally in the closed position, has been previously put in its open position where the orifices 22, 23 are opposite.
  • Figure 2 When the tool is lowered ( Figure 2), its element 2 is in the low position in the part 1, resting on the ring 32 fixed to the foot of the latter, so as to release the latching mandrel 28 and to allow coupling to this descent tool 37 (visible in FIG. 3) attached to the suspension cable 36.
  • the keys 27 of the latching mandrel 28 engage in the groove 26 of the upper seat 25 of the SSD section, which immobilizes the tool in the latter, the channels 1c of its part 1 opening outwardly into the annular space 30 comprised between the flanges 21b, 21c of the jacket 21, while the annular seal 38 of this same element 1 is located opposite the lower surface 24 of the SSD section and ensures a tight contact at this point, below the jacket 21.
  • the seal is likewise ensured by a seal annular 39 belonging to the attachment mandrel 28 and cooperating with the upper bearing 25.
  • the descent tool 37 is detached from the latter and raised to the surface using the cable 36; then, using this same cable, the junction socket 3 carrying the pressure sensor 31 is lowered.
  • This socket comes to be tightly fitted, by the internal bearing 3a which it comprises, provided with an annular seal. 40, on the end piece 2b of the element 2 of the tool.
  • the sensor 31 is connected to the conduit 35 via the channel 2c of the nozzle 2b ( Figure 4).
  • a pair of fingers 3b with which the sleeve 3 is fitted engage with a system of grooves 41 which appears on the periphery of a part of the end piece 2b in the form of a barrel, and which is composed (FIG.
  • the tool 1, 2 in the configuration of FIG. 4 communicates the associated pressure sensor 31, which, like it, is immersed in the oil contained in the production column 11, with the annular space 15 surrounding the latter, so that it makes it possible to carry out measurements of the pressure of the oil contained in this space.
  • the oil can, under the discharge action of the pump 16, go back up into said column by crossing the tool with discomfort minimal, via a non-return valve formed by a ball 42 and a circular seat 43 conjugated by the element 1 at its lower end, then via the interior space thereof, the interior space of the part 2a of the element 2 and the orifices 33 of the latter element (FIG. 4).
  • Said non-return valve doubles that of the pump 16, taking over from the latter if it were to exhibit a leak.
  • the efficiency of the pump 16 can be determined by associating with the pressure sensor 31 a second pressure sensor (not shown) which measures the pressure inside the production column.
  • FIGS. 5A, 5B, 5C show a concrete example of embodiment of a tool according to the invention, in the configuration of FIG. 4. We recognize there the different constituent parts of the well and of the tool sketched in this figure:
  • the production column 11, coaxial with the casing 10, comprising the section with circulation valve SSD equipped with the jacket 21 which can slide between the internal surfaces 24 and 25, the respective orifices 22, 23 having here been placed opposite;
  • the element 2 of the tool (formed from an assembly of several parts), sliding in the internal surface 1a of the element 1 by its tubular part 2a, which comprises at its apex the passage orifices 33 and ends by the end piece 2b;
  • junction socket 3 tightly coupled to the end of the end piece 2b by its internal bearing 3a provided with a double annular seal 40, and attached to the end piece 2b by its pair of fingers 3b engaged with the J-grooves 41 of this end piece, this junction socket being tightly coupled to the pressure sensor 31;
  • FIG. 5C shows the presence of an orifice 49 drilled in the wall of the element 1 of the tool and capable of bringing the spaces located on either side of this wall into communication.
  • this orifice is obscured and rendered inoperative by the ring 32, which cooperates with an internal surface 1d of the element 1 in sealed contact thanks to a pair of O-rings 51 between which is the orifice 49.
  • this orifice opens, on the inner side of the element 1, into a narrow closed annular chamber, limited by the bearing 1d, the periphery of the ring 32 and the pair of O-rings 51.
  • the orifice 49 can be activated by expulsion of the ring 32, the latter being fixed in the bearing 1d by a pair of shear pins 52.
  • FIG. 6 illustrates the final step preceding the raising of the tool once the pressure measurements have been completed.
  • the junction sleeve 3 is uncoupled from the endpiece 2b, it is brought up to the surface with the pressure sensor 31, then a fishing tool 45 is lowered which hooks onto the anchoring mandrel 28.
  • the recovery tool 45 pushes, by an axial arm 46 which it has, the element 2 downwards, so that the latter releases the ring 32 causing the shearing of pins 52 which fixed it to element 1, and makes it descend to a transverse rod 48 of abutment.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Measuring Fluid Pressure (AREA)
EP87402349A 1986-10-30 1987-10-21 Werkzeug zur Messung des Drucks in einer Ölbohrung Expired - Lifetime EP0267096B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615166A FR2606070B1 (fr) 1986-10-30 1986-10-30 Outil permettant la mesure de la pression dans un puits de petrole
FR8615166 1986-10-30

Publications (2)

Publication Number Publication Date
EP0267096A1 true EP0267096A1 (de) 1988-05-11
EP0267096B1 EP0267096B1 (de) 1991-01-30

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ID=9340384

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Application Number Title Priority Date Filing Date
EP87402349A Expired - Lifetime EP0267096B1 (de) 1986-10-30 1987-10-21 Werkzeug zur Messung des Drucks in einer Ölbohrung

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US (1) US4802359A (de)
EP (1) EP0267096B1 (de)
DE (1) DE3767830D1 (de)
FR (1) FR2606070B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989006740A1 (en) * 1988-01-15 1989-07-27 Drexel Equipment (Uk) Limited Shut-in tool

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5918670A (en) * 1991-08-31 1999-07-06 Expro North Sea Limited Multi-sensor relief valve well test system
GB9118692D0 (en) * 1991-08-31 1991-10-16 Coutts Graeme F Multi-sensor relief valve well test system
US5337601A (en) * 1993-01-19 1994-08-16 In-Situ, Inc. Method and apparatus for measuring pressure in a sealed well using a differential transducer
US5969242A (en) * 1998-04-30 1999-10-19 Lockheed Martin Idaho Technologies Company Isobaric groundwater well
US6044908A (en) * 1998-05-29 2000-04-04 Grant Prideco, Inc. Sliding sleeve valve and seal ring for use therein
US11008505B2 (en) 2013-01-04 2021-05-18 Carbo Ceramics Inc. Electrically conductive proppant
BR112015015733A2 (pt) 2013-01-04 2017-07-11 Carbo Ceramics Inc partículas de areia revestidas com resina eletricamente condutivas e métodos para detectar, localizar e caracterizar as partículas de areia eletricamente condutivas
US9434875B1 (en) 2014-12-16 2016-09-06 Carbo Ceramics Inc. Electrically-conductive proppant and methods for making and using same
RU2537452C1 (ru) * 2013-06-17 2015-01-10 Станислав Юрьевич Бирюков Способ свабирования скважины с вязким флюидом и устройство для его осуществления
US9551210B2 (en) 2014-08-15 2017-01-24 Carbo Ceramics Inc. Systems and methods for removal of electromagnetic dispersion and attenuation for imaging of proppant in an induced fracture
CN108894969B (zh) * 2018-07-05 2022-02-08 濮阳市百福瑞德石油科技有限公司 石油钻井工程钻井泵憋泵的监测判断方法及其泵压防护系统

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EP0023399A2 (de) * 1979-07-26 1981-02-04 Otis Engineering Corporation Verfahren und Vorrichtung zum Untersuchen von Erdölbohrlöchern
GB2110743A (en) * 1981-12-02 1983-06-22 Halliburton Co Apparatus and method for sensing downhole conditions
US4392377A (en) * 1981-09-28 1983-07-12 Gearhart Industries, Inc. Early gas detection system for a drill stem test

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DE2913896A1 (de) * 1979-04-06 1980-10-16 Preussag Ag Rohranordnung zum einbau in den steigrohrstrang einer mit tauchpumpen foerdernden bohrung in einer lagerstaette
EP0023399A2 (de) * 1979-07-26 1981-02-04 Otis Engineering Corporation Verfahren und Vorrichtung zum Untersuchen von Erdölbohrlöchern
US4392377A (en) * 1981-09-28 1983-07-12 Gearhart Industries, Inc. Early gas detection system for a drill stem test
GB2110743A (en) * 1981-12-02 1983-06-22 Halliburton Co Apparatus and method for sensing downhole conditions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989006740A1 (en) * 1988-01-15 1989-07-27 Drexel Equipment (Uk) Limited Shut-in tool
US4964460A (en) * 1988-01-15 1990-10-23 Eljay Well Services Limited Shut-in tool

Also Published As

Publication number Publication date
DE3767830D1 (de) 1991-03-07
EP0267096B1 (de) 1991-01-30
FR2606070B1 (fr) 1992-02-28
FR2606070A1 (fr) 1988-05-06
US4802359A (en) 1989-02-07

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