EP0134734B1 - Verfahren und Vorrichtung zum Messen in einer Erdölbohrung - Google Patents

Verfahren und Vorrichtung zum Messen in einer Erdölbohrung Download PDF

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Publication number
EP0134734B1
EP0134734B1 EP84401483A EP84401483A EP0134734B1 EP 0134734 B1 EP0134734 B1 EP 0134734B1 EP 84401483 A EP84401483 A EP 84401483A EP 84401483 A EP84401483 A EP 84401483A EP 0134734 B1 EP0134734 B1 EP 0134734B1
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EP
European Patent Office
Prior art keywords
valve
passage
jacket
external tube
cable
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.)
Expired - Lifetime
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EP84401483A
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English (en)
French (fr)
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EP0134734A1 (de
Inventor
Pierre H. Goldschild
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.)
Etudes et Fabrication Flopetrol SA
Flopetrol Services Inc
Original Assignee
Etudes et Fabrication Flopetrol SA
Flopetrol Services Inc
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Publication of EP0134734A1 publication Critical patent/EP0134734A1/de
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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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
    • E21B49/087—Well testing, e.g. testing for reservoir productivity or formation parameters
    • E21B49/0875—Well testing, e.g. testing for reservoir productivity or formation parameters determining specific fluid parameters
    • 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
    • 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

  • the invention relates generally to the exploitation of oil wells, and more particularly to the measurements which are carried out there with a view to determining the characteristics of the deposit.
  • a conventional method for determining the characteristics of a deposit consists in causing it to flow through the drill string or the production column, then interrupting the flow using a valve, and observing the pressure evolution upstream of the valve.
  • this process is implemented using a valve located on the surface.
  • This proven technical solution has the drawback, however, that the pressure measurement made at the surface, just upstream of the valve, only reflects the true response of the reservoir itself to the interruption of the flow far enough.
  • the disturbing phenomena are quite numerous. The most important are the height of the column of fluid present between the wellhead and the deep layer where the deposit is located, as well as the possible exchanges, thermal or other, between this column of fluid and the intermediate underground formations.
  • a bottom valve remote controlled from the surface, is used. It is mounted in the production column, near a seal (or packer) isolating the producing layer from hydrostatic pressure.
  • This arrangement will hereinafter be called “conventional test apparatus”.
  • a pressure gauge-recorder assembly sensitive to the pressure upstream of the valve is provided in depth. The measurements are then only available after raising the drill string.
  • US-A-4,278,130 and US-A-4,108,243 each describe a method of measuring in an oil well and a device for carrying out this method, the device comprising a tubular body forming part of a train of drilling rods, and a control unit comprising a pressure gauge, suspended on a cable and capable of being inserted and anchored in the tubular body.
  • the tubular body includes a valve operable by the control crew to interrupt or release the flow of fluid from the underground layers in the drill string.
  • the control of the valve is obtained by means of a motor arranged in the control equipment, without traction on the cable.
  • valve In US-A-4 278 130, the valve is normally closed, and its opening puts the pressure gauge in communication with the fluid of the underground layers.
  • a bypass passage is provided around the control crew, in parallel with the valve.
  • the invention relates to a method according to claim 1, and a device according to claim 7.
  • Optional features of the invention are defined in the dependent claims.
  • the reference 10 designates a well casing.
  • the reference 100 designates as a whole the valve body part of the device according to the present invention.
  • This body 100 of generally tubular shape, is inserted into a drill string or into a production column. It will be assumed hereinafter that it is a production column, having end caps 101 and 102 to which the body 100 is screwed.
  • the end piece 102 is provided with a deep valve VP, controlled from the surface, at the opening as well as 'at closing. When the VP valve is open, the zone to be tested flows into the nozzle 102.
  • the body 100 comprises a flap valve 121, actuated by a jacket 130, itself controlled by a crew 200 lowered at the end of an electric cable and carrier 199.
  • the crew comprises a internal rod 251, with a manometer 252 at the head, as well as an external tube 201 in which the rod 251 slides.
  • the tube 201 is engaged on the body 100, and the rod 251 on the liner 130.
  • a wide passage 140 bypasses the two anchor points.
  • a thin, tubular passage 150 enables the upstream connection of the flap valve 121 to the rod 251, and thereby to the pressure gauge.
  • the first step receives a thin cylinder or jacket 104, below which is defined an annular passage 142.
  • the part 103 is provided with a series of through orifices such as 143, making the annular passage 142 communicate with the interior of the part 103.
  • the part 105 is likewise provided with a series of through orifices such as 141, making the annular passage 142 communicate with the interior of the part 105.
  • the elements 141, 142 and 143 together define a first derivative passage 140.
  • the part 105 is provided with a series of radial outward recesses 118 and 119.
  • the lower recess 119 houses a cylindrical sleeve 109, completed by a part 108. This has a radial shoulder inward, and at the same time serves as a point of articulation for a flap valve 121, pivotally movable about the axis 120, against an elastic return not shown (spiral spring for example). It is then threaded to receive the end piece 102.
  • the internal bore 117 of the part 105 slidingly receives a jacket 130, provided with a radial shoulder towards the outside 131, which normally abuts against the homologous shoulder of the part 108, and this under the effect of the elastic return of the spring 132, which bears between the shoulder 131 and one of the internal recesses of the part 105.
  • the jacket 130 In its rest position, where the stop 131 rests on the part 108, the jacket 130 maintains the flap valve 121 in the open position, fully retracted in its housing. It is noted that the free passage inside the jacket 130 corresponds substantially to the diameter of the end piece 102.
  • the low orifices such as 141 of the branch passage 140 terminate, in the bore 117, in an area which is in line with the liner 130.
  • the liner 130 naturally comprises a series of orifices such as 134, counterparts of the inputs of the various orifices such as 141.
  • the jacket 130 is immobilized in rotation so that the orifices 134 correspond to the orifices 141.
  • This passage 110 begins with a wide section defined inside the end piece 101, then is extended by the bore 111 of part 103, practically without modification of section. In the lower part of the bore 111 terminate the orifices 143 already mentioned.
  • the bore 111 ends with a constriction at 112 followed by a bore 113 where a first anchoring zone is defined.
  • This first anchoring zone is constituted by the succession of two radial outward recesses, or grooves, denoted respectively 114 and 115.
  • the grooves are here of an annular shape, covering the entire periphery of the bore. One of them is however provided with a pin projecting radially inwards (not shown).
  • the groove 114 has a trapezoidal section, symmetrical about a radial plane.
  • the groove 115 has a straight section in a rectangular trapezium, the side of which at right angles is at the top.
  • the bore 113 extends to the right of the thread connecting the part 103 to the part 105.
  • the part 105 receives two inserts or rings 106 and 107 respectively, offering in order straight sections decreasing with respect to that of bore 113.
  • the ring 107 intended to receive a seal as will be seen below, has a carefully polished inner face.
  • the interior passage 110 is again defined by a bore 116 machined in the part 105 itself.
  • a transition 116A is provided between the bore 116 and the bore 117 which receives the jacket 130 already mentioned.
  • the upper part of the jacket 130 internally comprises a second anchoring zone, defined by a groove 133, of trapezoidal cross section, like the groove 115 mentioned above.
  • first branch passage 140 is suitable for establishing, downstream of the valve 121, a hydraulic short circuit substantially of the same section as the central passage 110 (in its polished intermediate bore 107 which represents the lower section). This short circuit is established to bypass at least the two anchoring zones (114 and 115 for one, and 133 for the other).
  • a second derivative passage is provided between the upstream of the flap valve 121 and an intermediate bore point defined by the ring 107.
  • the passage 150 is of small section, and tubular over its entire length. It begins with the through orifice 151 formed in the part 109. This orifice 151 is connected to the fine pipe 152, which returns slightly inwards at 153 to avoid the annular passage 142 already mentioned, and finally leads to a radial orifice through 154 formed in bore 107.
  • the tubular body which has just been described, with reference to FIG. 2 is interesting in itself, in that it can be inserted in a drill string or in a production column, without greatly reducing the cross-section thereof. of passage.
  • valve control unit By its anchoring means, it can receive at will a valve control unit, or another control tool, which engages on the above-mentioned anchoring zone or zones.
  • the body 100 internally provides a passage 110 with a large section, which allows both the passage of the fluid and the passage of other tools used at depth.
  • the first derivative passage 140 maintains a hydraulic short circuit which is substantially of the same section as the minimum section of the central passage 110 (at the level of the ring 107).
  • the present invention makes it possible to install, above the normal test apparatus, another valve device, connected to a cable which allows, on the one hand, its actuation and, on the other hand, the immediate transmission of the pressure information recorded by a pressure gauge.
  • the invention also makes it possible, in the event of an incident or breakdown which may occur, in particular on the pressure gauge, to go up and change or repair and to descend the control crew in place without interrupting the actual test operations, and in particular without that it is necessary to reassemble all the rods or the production column.
  • FIGS. 3 and 3A to 3E the preferred embodiment of the control equipment which is inserted into the body of FIG. 2.
  • Figure 3 is a sectional view in its left half, and a side view in its right half.
  • the sectional section shows in particular that the assembly 200 mainly consists of an outer tube referenced 201 and an inner rod referenced 251. It is important to note that, in the left part of the figure, the inner rod 251 n 'is no longer shown in section, but in external view, above the line 250.
  • the entire crew 200 can be lowered into the rods or into the production column by means of a carrying and conducting single cable (199, FIG. 1), which hangs on the head 252 of the internal rod 251 Load bars are naturally provided with sufficient mass to ensure the proper descent of the crew.
  • the head 252 contains an electronic pressure gauge, which may for example be of the TPT type, manufactured by Etudes et Fabrications FLOPE-TROL.
  • the sleeve 204 carries, in its intermediate part, a hooking member. This is defined by two outward projections, respectively denoted 293 and 294, which are homologous with the grooves 114 and 115 of the first anchoring zone, respectively.
  • Such protrusions are commonly referred to as "keys” or “dogs” in the art.
  • the des are retractable radially inside the sleeve 204, against an elastic return shown diagrammatically at 293A and 294A (FIG. 3C), and bearing on a tube 295.
  • the sleeve 204 is fixed at its other end to the end piece 206, which ends in an inward radial recess on which the seals 207 are housed.
  • the linings 207 will come into place on the bore 107, ensuring a seal, while allowing communication between the outlet 154 of the second branch passage 150 (FIG. 2) and an orifice through 208 formed in said linings 207 and the part 206.
  • this comprises a rod of smaller section 253, provided with a longitudinal groove 254 in which the pin 203 already mentioned is housed.
  • the internal rod 251 is therefore movable to slide inside the external tube 201.
  • the cooperation of the pin 203 and the groove 254 ensures their immobilization with relative pivoting.
  • the rod 253 is followed by a barrel 255, provided with J-slots (J-slots), which form a circuit closed by its periphery, and cooperate with a pin 205, as will be seen below.
  • the internal rod again comprises a tube of small section 256, provided with an axial passage which communicates with the pressure gauge housed in the head 252.
  • the tube 256 passes inside the tube 259 already mentioned.
  • the bottom of the tube 256 is associated with a part forming a first bulge 257, which externally houses an annular seal 261.
  • the bulge 257 is followed by a zone of reduced section 258 in which the central passage of the tube 256 terminates.
  • second bulge 259 houses a second annular seal 262.
  • the internal rod 251 is continued by a solid tube 270, provided with an end stop 271, consisting of an attached nut.
  • a key holder made in two parts 272 and 273.
  • the keys 274 and 275 integral with each other, define a second gripping member.
  • the second key 275 is suitable for cooperating with the anchoring groove 133 of the jacket 130 (FIG. 2) and has a shape homologous to that of the groove 133.
  • the key 274 located above is suitable for coming into cooperation with the shrunk 116A provided between the bores 117 and 116, to allow the erasure of this second gripping member, as will be seen below.
  • the keychain made of parts 272 and 273, is normally biased in abutment towards the shoulder 271 by an elastic return 276.
  • the latter bears at its other end on a sleeve 230, which is also movable by sliding on the tube 270.
  • the sleeve 230 has, turned upwards, an internal shape suitable for housing the bulge 259 which carries the second annular seal 262. It is therefore prevented from moving axially upwards, either by this widening 259, or by the fact that it abuts against the lower end 209 of the outer tube 201. In this abutment position, the second annular seal 262 can move smoothly from its position housed inside the cap 230 to a higher position, sliding inside the tube 206 ( Figure 3D).
  • the moving assembly 200 comprises, between the external tube 201 and the internal rod 251, a device for converting reciprocating movement into unidirectional movement, and means suitable for disengaging one of the two gripping members (here the first gripping device) after a predetermined number of pulls / releases of the descent cable.
  • FIG. 7 This figure is a developed view of the outer contour of the barrel, with its slots in J.
  • the pin 205 mentioned above is mounted on a jacket 290, movable in rotation inside the external type 201.
  • the jacket 290 comprises a part 290A (FIG. 3B) of reduced diameter, externally provided with a thread , which cooperates with a homologous thread of another jacket 291.
  • This comprises openings allowing the keys 293 and 294 to pass. These same openings ensure the immobility of the jacket 291 in rotation. On the other hand, it can move in translation under the effect of the thread which connects it to the first jacket 290.
  • the jacket 291 has an internal conical shape 292, widening upwards. When the jacket 291 has sufficiently risen, this wedge 292 will engage the keys 293 and 294, and ensure the retraction of these inside the external tube 201.
  • the operation of the mobile assembly supposes an alternating translation of the rod 251 inside the tube 201. It is assumed that at the start of such an alternating translation movement, the pin 205 is in position 280 of FIG. 7. During a traction exerted on the rod 251, this pin will come to abut at 281, then take the slot path 282, to complete its movement at 283. During the relaxation which will then intervene, the pin will now take the slot path 284, to come back to 285 a position which is in fact (taking into account the development of 360 °) the same position as 280.
  • the method is applied to a well in which a test of productive zones is carried out.
  • the first step of the process consists in inserting into the drill string or the production column of the well, a tubular body as described above with reference to FIGS. 1 and 2.
  • test device installed in depth, with its own valve, is therefore installed at the level of the seal (or packer) delimiting the layer which it is desired to test.
  • the method of the invention installs above the conventional test apparatus (without pressure gauge or recorder) another valve system, which involves the flap valve 121 incorporated in the body, and its control jacket 130, and will be used for the test.
  • the method of the invention has as a second step the descent into the well, at the end of the carrier and conductor monocable, of the control equipment illustrated in FIG. 3, and described with reference to this.
  • the keys 293, 294 of the crew 200 arrive on the constriction 112, while the keys 274, 275 of the lower part were able to pass this constriction, then avoid, given their smaller diameter outside, the attachment in the grooves 114 and 115, and subsequently retract to cross the zones of smaller section at 113, 106 and 107 as well as 116. They therefore arrived at 117, above the liner 130.
  • the load bars added to the mobile assembly are chosen to be of sufficient mass to fit the keys 293, 294 into the grooves 114 and 115, respectively.
  • a finger (not shown) ensures, by abutment on the keys, that the tube 201 cannot (or only slightly) rotate relative to the body 100.
  • the establishment of these keys is naturally accompanied by that of the seal 207 on the polished bore 107.
  • the central passage is now completely closed.
  • the flap valve 121 is open, and the fluid can pass through the passage 140 to bypass the moving element, and go up towards the head of the well. It was previously indicated that this passage 140 has in all points a section substantially equal to the section of the main passage 110 (or more exactly at its minimum value available here at the bore of the ring 107). It is also noted that the upper part of the passage 110, inside the end piece 101 and the body 103, has been provided much wider. This makes it possible to continue to benefit from a cross section equivalent to that of bore 107, even when the mobile assembly is located in the upper part of passage 110.
  • the sleeve 230 is separated from the outer tube 201.
  • the fluid pressure can therefore enter there through the central tube of the internal rod 251_, to go up to the pressure gauge housed in the head 252.
  • the latter can thus deliver pressure information which is transmitted to the surface by the carrying and conducting cable.
  • the next phase of the process occurs when it is desired to close the flap valve 121.
  • a traction is then exerted on the cable, which comes to pull the internal rod 251 upward relative to the external tube 201.
  • the stop 271 then pulls the lower keys 274, 275, as shown in FIG. 5, and these drive the jacket 130 with them, against the effect of the spring 132.
  • Sufficient raising of the jacket allows the flap valve 121 to close under the effect of both its spiral spring and its drive by the movement of fluid.
  • the well no longer flows.
  • the rising pressure of the valve is transmitted by the fine tube 150 to the homologous orifices 154 and 208.
  • the sleeve 230 has now come into abutment on the lower end of the tube 201, and the pair of seals 261 and 262 frames the outlet of the orifice 208 inside the tube, isolating the latter from any other pressure.
  • the pressure upstream of the valve is thereby transmitted to the central pipe formed in the tube 251, thereby reaching the pressure gauge, which transmits the measurement to the surface as before.
  • the opening operations of the flap valve 121 begin with a loosening of the cable fixed to the central rod 251. The latter then descends, as illustrated in FIG. 6.
  • the key ring 273 does not not follow, since it is fixed on the jacket, and the movement of the latter downward is prohibited by the pressure of the fluid under the flap valve.
  • the bulge 259 has again come to be housed, with the seal 262, in the sleeve 230, which, in a downward movement, is detached from the outer tube 201.
  • the passage 150 then allows the fluid located upstream of the valve 121 to come, through orifice 208, to escape downwards in the annular pipe formed between the two seals 261 and 262, and thereby join the downstream face of the flap valve as well as the entire volume of the casing by the first bypass passage 140.
  • the difference in pressures on either side of the valve has decreased enough for the elastic return exerted on the jacket by the spring 132, and the force due to the spring 276 (taking into account the low position of the cap 230) again become sufficient to ensure the opening of the valve. Equalization can be accelerated by closing the deep valve and / or injecting pressurized fluid into the tubing.
  • the cone 292 of the shirt 291 pinches the heels of the keys 293, 294 and retract them.
  • the outer tube 201 is then no longer secured to the body.
  • the keys 274, 275 remain engaged on the groove 133 of the shirt 130.
  • the traction on the cable then allows the keys 274, 275 to be raised sufficiently so that the first one (274) comes to retract on the constriction 116A formed between the bores 117 and 116, thus releasing the jacket.
  • the valve 121 closes or remains closed during this maneuver, to reopen as soon as the pressures on either side of the valve 121 will be equalized, the deep valve being closed or not. The entire control crew can then be brought to the surface.
  • the number of closing / opening operations which are to be carried out before the tool is released can be adjusted before the control equipment is lowered, by an adequate prepositioning of the screw sleeve 290 relative to the sleeve sliding 291.
  • the invention is not limited to the single embodiment which has just been described.
  • we can use a ball valve instead of a flap valve since the main thing is that the type of valve used allows access upstream of the valve with tools to perform certain operations under the valve if necessary.
  • a non-electric cable can be used, but in this case, the pressure gauge must be connected to a set of memories which make it possible to record the pressure data. These are then read from the surface by appropriate and known means when the control unit is removed from the well.

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  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Fluid-Pressure Circuits (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Claims (14)

1. Messverfahren in einem Ölbohrloch, umfassend die folgenden Schritte:
a) vorab erfolgendes Einfügen in den Rohrzug oder die Förderkolonne (101, 102) eines Rohrkorpus (100), umfassend eine zentrale weite Passage (110), die eine Zwischenbohrung (107) umfaßt, welche ihren kleineren Durchmesser begrenzt, mit einer oberhalb derselben angeordneten ersten Verankerungszone (114, 115) und mit unterhalb der Zwischenbohrung (107) angeordnetem Ventil (121), das normalerweise durch eine Hülse (130) offen gehalten wird, die gleitbeweglich in der zentralen Passage unter Vorspannung durch ein elastisches Vorspannmittel (132) gegen einen Anschlag (108) montiert ist und im Innern mit einer zweiten Verankerungszone (133) versehen ist, während integral mit dem rohrförmigen Korpus eine erste Umleitpassage (140) vorgesehen ist, ausgebildet zum Ausbilden stromabwärts des Ventils eines hydraulischen Kurzschlusses, welcher Kurzschluß mindestens die beiden Verankerungszonen umgeht, und eine zweite Umleitpassage (150) kleinen Querschnitts zwischen dem stromauf der Wanne liegenden Bereich und einem Punkt der Zwischenbohrung;
b) Herablassen in das Bohrloch am Ende eines Kabels (199) einer Steuereinheit (200), gebildet von einem Außenrohr (201), versehen mit ersten Eingriffsorganen (293,294) für den Eingriff auf der ersten Verankerungszone (114, 115) und einer Innenstange (251) gleitbeweglich in dem Rohr (201) und versehen mit zweiten Eingriffsorganen (274, 275) für den Eingriff auf der zweiten Verankerungszone (133), wobei das Außenrohr ferner eine Dichtung (207) umfaßt, ausgebildet zum Zusammenwirken mit der Zwischenbohrung (107) sowie einem Durchbruch (208) in der Dichtung, ausgebildet zum Kommunizierenlassen der zweiten Passage (150) mit dem Innern des Außenrohres (201), wobei die Innenstange (251) ein Paar von Dichtungen (261, 262) umfaßt, ausgebildet zum Inkontakttreten beidseits des Durchbruchs (208) mit dem Innern des Außenrohres (201) und eine Leitung, die den Raum zwischen diesen Dichtungen mit einem Manometer (252) kommunizieren läßt, wobei das Kabel (199) an die Innenstange (251) angeschlossen ist, und
c) Ziehen an dem Kabel, welches die Hülse (130) verlagert, das Ventil (121) schließt und den stromauf des Ventils liegenden Bereich in Kommunikation mit dem Manometer (252) bringt.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Außenrohr (20) der Steuereinheit (200) vervollständigt wird durch eine Muffe (230), die gleitbeweglich auf der Stange (251) ist und ausgebildet ist zum Plazieren einer der beiden Dichtungen des Paares (262) in Ruheposition, und daß es ferner den zusätzlichen folgenden Schritt umfaßt:
d) Lösen des Kabels (199), was mittels Durchtritt von Fluid zwischen dem Außenrohr (201) und der Muffe (230) einen Ausgleich der Drücke beidseits des Ventils ermöglicht, bis die elastischen Vorspannmittel, die auf die Hülse (130) einwirken, hinreichen zum Öffnen des Ventils (121).
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß man mehrere Male die Schritt c) und d) wiederholt, daß in der Steuereinheit (200) zwischen dem Außenrohr (20) und der Innenstange (251) eine Vorrichtung vorgesehen ist, ausgebildet zum Außereingriffbringen mindestens eines der Eingriffsorgane am Ende einer vorgegebenen Anzahl von Wiederholungen der genannten Schritte, und daß
e) man danach die Steuereinheit (200) am Ende des Kabels (199) herauszieht.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß das Lösen des anderen Eingriffsorgans (274, 275) realisiert wird durch Zusammenwirkung der Form zwischen demselben und der zentralen' Passage des Korpus (116, 116A) zu Beginn des Schrittes (e).
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die erste Umleitpassage (140) von einem Punkt des Korpus ausgeht, der sich in Höhe der Hülse (130) befindet, und daß dieselbe eine oder mehrere Öffnungen (134) umfaßt, die dem Einlaß der genannten Umleitpassage gegenüber zu liegen kommen mindestens in der Ruheposition der Hülse.
6. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der rohrförmige Korpus (100) oberhalb eines Tiefenventils (VP), das am Boden des Bohrlochs installiert ist, eingefügt ist.
7. Vorrichtung zum Ausführen von Messungen in einem Ölbohrloch, welche Vorrichtung umfaßt:
-einen rohrförmigen Korpus (100) mit einer zentralen weiten Passage (110), welche Passage eine Zwischenbohrung (107) umfaßt, die ihren kleineren Durchmesser begrenzt, mit oberhalb derselben angeordneten ersten Verankerungszone (114, 115) und mit unterhalb der Zwischenbohrung angeordnetem Klappenventil (121), das normalerweise offengehalten wird durch eine Hülse (130), die gleitbeweglich in der zentralen Passage (110) angeordnet ist unter Vorspannung durch elastische Vorspannmittel (132) gegen einen Anschlag (108) und im Innern mit einer zweiten Verankerungszone (133) versehen ist,
-integriert in den rohrförmigen Korpus, eine erste Umleitpassage (140) ausgebildet zum Etablieren stromabwärts des Ventils (121) eines hydraulischen Kurzschlusses, welcher Kurzschluß mindestens die beiden Verankerungszonen (114, 115 und 133) umgeht,
-ebenfalls integriert in den rohrförmigen Korpus, eine zweite Umleitpassage (150) kleinen Querschnitts zwischen dem stromaufwärts liegenden Bereich des Klappenventils (121) und einem Punkt (154) der Zwischenbohrung (107),
-wobei der rohrförmige Korpus (100) in einen Bohrlochrohrzug oder in die Produktionskolonne einfügbar ist, ohne den Querschnitt der Passage stark zu verringern, und wahlweise eine Steuereinheit des Ventils aufnehmen kann, im Eingriff auf den Verankerungszonen, während die erste Umleitpassage eine hydraulische Passage für das Fluid aufrecht erhält, sobald das Ventil offen ist, und während die zweite Umleitpassage hydraulische Messungen stromaufwärts des Ventils ermöglicht, wenn dieses geschlossen ist, und
-eine Steuereinheit (200) bestehend aus einem Außenrohr (201), das gleitbeweglich eine Innenstange (251) aufnimmt, die mit einem Ablaßkabel (199) verbindbar ist,
-wobei das Außenrohr mit ersten Eingriffsorganen (293, 294) versehen ist, ausgebildet zum Eingriff auf der ersten Verankerungszone (114, 115) des Korpus und mit einer Dichtung (207), ausgebildet zum Zusammenwirken mit der Zwischenbohrung (107) des Korpus, sowie mit in der Dichtung ausgebildetem Durchbruch (208), ausgebildet zum Kommunizierenlassen der zweiten Umleitpassage (150) des Korpus mit dem Innern des Außenrohres (201),
-wobei die Innenstange (251) mit einem zweiten Eingriffsorgan (274, 275) versehen ist für den Eingriff auf der zweiten Verankerungszone (133) des Korpus sowie mit einem Paar von Dichtungen (261, 262), ausgebildet zum Inkontakttreten beidseits des Durchbruchs (208) mit dem Innern des Außenrohres (201), während eine Leitung vorgesehen ist, die den Raum zwischen den beiden Dichtungen (261, 262) mit einem Manometer (252) kommunizieren läßt,
wobei die Einheit das Schließen des Ventils durch Zug an dem Ablaßkabel ermöglicht, während das Manometer den Druck stromaufwärts des Ventils mißt.
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß das Außenrohr (201) der Einheit (200) vervollständigt wird durch eine Muffe (230), die gleitbeweglich auf der Stange (251) sitzt und ausgebildet ist zum Plazieren einer der beiden Dichtungen des Paares (262) in Ruheposition, wobei der Fluiddurchtritt zwischen dem Außenrohr (201) und der Muffe (230) beim Lösen des Kabels (199) einen Ausgleich der Drücke beidseits des Ventils ermöglicht, bis die elastischen Vorspannmittel, die auf die Hülse (130) einwirken, hinreichen zum Öffnen des Ventils (121
9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß sie in der Steuereinheit (200) zwischen dem Außenrohr (20) und dem Innenrohr (251) mit einer Einrichtung versehen ist, ausgebildet zum Lösen mindestens eines der Eingriffsorgane am Ende einer vorgegebenen Anzahl wiederholter Zug- und Lösevorgänge des Kabels (199).
10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß das Lösen des anderen Eingriffsorgans (274, 275) realisiert wird durch Zusammenwirken der Form zwischen demselben und der zentralen Passage des Korpus (116, 116A).
11. Vorrichtung nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, daß die bewegliche Einheit (200) zwischen dem Außenrohr (201) und der Innenstange (251) eine Umsetzeinrichtung umfaßt zum Umsetzen der Alternativbewegung in eine gleichgerichtete Bewegung (205, 255).
12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Innenstange (251) in fester Radialposition bezüglich des Außenrohres (201) gehalten ist (203, 254), daß die Bewegungsumsetzeinrichtung auf der Innenstange eine Trommel (255) umfaßt, versehen mit einem J-förmigen Schlitz, der auf seiner Peripherie einen geschlossenen Kreis bildet, danach rings um diese Trommel eine Hülse (190), die einen in den Schlitz in J-Form eingreifenden Stift trägt, und auf dem unteren Abschnitt ein Gewinde aufweist, während mit diesem Gewinde eine weitere Hülse (291), die gegen Drehung gesichert ist, zusammenwirkt, wobei die Hin- und Herbewegung der Innenstange relativ zu der Trommel (255) eine entsprechende Drehung der ersten Hülse (190) bewirkt, welche die zweite Hülse (291) in axialer Translation verlagert, die durch eine Eckform (292) das erste Eingriffsorgan (293, 294) zum Lösen bringt am Ende einer vorgegebenen Anzahl von Zuglösevorgängen des Ablaßkabels.
13. Vorrichtung nach einem der Ansprüche 7 bis 12, dadurch gekennzeichnet, daß die erste Umleitpassage (140) von einem Punkt des Korpus ausgeht, der sich in Höhe der Hülse (130) befindet, und daß dieselbe eine oder mehrere Öffnungen (134) umfaßt, die gegenüber dem Einlaß dieser Passage zu liegen kommen mindestens in der Ruheposition der Hülse.
14. Vorrichtung nach einem der Ansprüche 7 bis 13, dadurch gekennzeichnet, daß der rohrförmige Korpus (100) oberhalb einer Tiefenventilanordnung (VP), die am Boden des Bohrlochs installiert ist, eingefügt ist.
EP84401483A 1983-07-12 1984-07-12 Verfahren und Vorrichtung zum Messen in einer Erdölbohrung Expired - Lifetime EP0134734B1 (de)

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FR8311629A FR2549133B1 (fr) 1983-07-12 1983-07-12 Procede et dispositif de mesure dans un puits petrolier
FR8311629 1983-07-12

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EG17002A (en) 1989-06-30
NO842819L (no) 1985-01-14
CA1227417A (en) 1987-09-29
US4678035A (en) 1987-07-07
DE3484083D1 (de) 1991-03-14
EP0134734A1 (de) 1985-03-20
FR2549133A1 (fr) 1985-01-18
FR2549133B1 (fr) 1989-11-03

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