EP0280294A2 - Test drill string for deep wells - Google Patents

Test drill string for deep wells Download PDF

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Publication number
EP0280294A2
EP0280294A2 EP88102813A EP88102813A EP0280294A2 EP 0280294 A2 EP0280294 A2 EP 0280294A2 EP 88102813 A EP88102813 A EP 88102813A EP 88102813 A EP88102813 A EP 88102813A EP 0280294 A2 EP0280294 A2 EP 0280294A2
Authority
EP
European Patent Office
Prior art keywords
test tube
stator
test
tube string
operating position
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
EP88102813A
Other languages
German (de)
French (fr)
Other versions
EP0280294B1 (en
EP0280294A3 (en
Inventor
Joachim Dr. Köpper
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.)
Baker Hughes Oilfield Operations LLC
Original Assignee
Eastman Christensen Co
Eastman Teleco Co
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 Eastman Christensen Co, Eastman Teleco Co filed Critical Eastman Christensen Co
Priority to AT88102813T priority Critical patent/ATE79661T1/en
Publication of EP0280294A2 publication Critical patent/EP0280294A2/en
Publication of EP0280294A3 publication Critical patent/EP0280294A3/en
Application granted granted Critical
Publication of EP0280294B1 publication Critical patent/EP0280294B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B49/088—Well testing, e.g. testing for reservoir productivity or formation parameters combined with sampling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 the boreholes or wells
    • E21B23/02—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B43/11—Perforators; Permeators
    • E21B43/116—Gun or shaped-charge perforators
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B49/084—Obtaining fluid samples or testing fluids, in boreholes or wells with means for conveying samples through pipe to surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/008—Pumps for submersible use, i.e. down-hole pumping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits

Definitions

  • the invention relates to a test pipe string for examining underground deposits of pumpable media drilled through a deep bore in an embodiment in accordance with the preamble of claim 1.
  • Test tube strands of the type mentioned are used in particular for the investigation of deposits with respect to formation intrinsic pressures, from which conclusions can be drawn regarding possible production quantities. With the help of the test pipe string inserted into the borehole, it is possible to close the borehole and to measure the course of the formation pressure building up and to transmit the measured values to the earth's surface. If interesting funding expectations result from the measurement results, samples of the medium are taken for examination, and test funding may be carried out over several hours.
  • delivery pumps consisting of a stator and a rotor, in particular Moineau pumps, are used, which either form a permanent part of the test conveyor line or are installed in the latter if necessary. In the latter case, it is necessary to catch up the entire test tube string from the bore and to install a feed pump in it, after which the test tube string has to be retracted before the sampling or. the test funding operation can be carried out.
  • test tube strings with a permanently installed feed pump do not require the aforementioned work before sampling or test operation is carried out, but test feed strings with a permanently installed feed pump are very costly, which increases the costs of the deposit investigation undesirably in all cases in which the deposits already increase after the Show pressure measurement results as uninteresting.
  • the bearing seals of a delivery pump that is permanently installed in the test pipe string which avoid pressure equalization from annulus to delivery area, fail at high pressure loads, which leads to pressure equalization between the delivery and annulus areas of the bore and requires extensive repair work.
  • the invention is based on the object of creating a simple, reliable and inexpensive test tube string which, if necessary, can be retrofitted to carry out sampling or test funding without removing the test tube string.
  • the invention solves the problem on the basis of a test pipe string according to the preamble of claim 1 with the features specified in the characterizing part of the claim. With regard to essential further refinements, reference is made to claims 2 to 8.
  • test pipe string is simple and inexpensive and can be used for test purposes at high pressure loads without any risk of sealing. If it turns out that a sampling or a test conveyor operation is expedient, the test conveyor train can be quickly and easily added to one which can now carry out a conveyor operation. This is done by retracting the rotor or the rotor / stator unit by means of the drive linkage for the rotor from the surface of the earth, it being possible for the test conveyor train to remain in its installed position.
  • Fig. 1 illustrates a test tubing string T according to the invention in a test position in a borehole 1 that cased, i.e. is provided with a lining 2 or casing.
  • the test pipe string T delimits an annulus 3 with the lining 2 of the borehole 1, which is closed near the lower end by a packer 4 and at the upper end by a pressure-tight connection of the lining 2 and the test pipe string T at 5.
  • the test tube string T comprises a test section 6, which has a perforation area 7 near its lower end and comprises measuring devices (not shown) as are customary and known for such test tube strands.
  • the packer 4 is located directly above the perforation area 7 of the test section 6.
  • the stator 8 of a feed pump which is designed as a Moineau pump, is located above the test section 6.
  • the housing 9 of the stator 8 is inserted as part of the test tube string T therein and is screwed to the string areas adjacent to the top and bottom sides at 10 and 11, respectively.
  • the rotor 12 of the feed pump is attached to the lower end of a special drive linkage 13, by means of which it can be lowered from the head of the borehole 1 into the test pipe string T already installed in the borehole 1, 2 for test purposes, into an operating position in which it is in a Conveyor operating position is within the stator 8 of the feed pump. 1 shows the rotor 12 when it is lowered into the operating position shortly before the stator 8 is reached.
  • the drive linkage 13 is driven by a drive motor M which, in the operating position of the parts for a sampling or test conveyor operation, closes the upper end of the test tube string T with its housing 14 and has a sealed bearing at 15 for its drive shaft 16 connected to the drive linkage 13.
  • stator 8 and the rotor 12 form a pump unit P that can be moved into and pulled out of the test tube string T into the operating position by means of the drive rod 13, and the housing 9 of the stator 8 is in the operating position of the pump unit P. in the test tube string T sealed against this and secured against twisting.
  • test tube string T is provided with a support tube section 17 which is provided on the inside with an anti-rotation profile 18, e.g. a polygonal profile, a multi-spline profile or the like is provided, and the housing 9 of the stator 8 has a corresponding counter profile 19 on its outside.
  • an anti-rotation profile 18 e.g. a polygonal profile, a multi-spline profile or the like is provided, and the housing 9 of the stator 8 has a corresponding counter profile 19 on its outside.
  • the support tube section 17 is provided in a region below the anti-rotation profile 18 with a constriction region 20 and carries in this a circumferential seal 21 which is in sealing engagement with the profile-free lower end of the housing 9 of the stator 8 in the operating position of the pump unit P.
  • the rotor 12 which is axially displaceable to a limited extent in its stator 8 is provided with a stop 22 and 23 at a distance above and below its working part.
  • the housing 9 of the stator 8 also has an upper stop 24 and a lower stop 25, and when the pump unit P is moved into the test tube string or when it is pulled up, the stops 22, 23 alternately take along with the stops 24 and 25. or support intervention.
  • stator 8 While when the pump unit P is retracted, the stator 8 initially rests on the stop 23 of the rotor 12 via its stop 25, if necessary and in the event of resistance from the upper stop 22, the rotor 12 can have a downward pressure force on the stator 8 via the stop 24 of the stator 8 exercise.
  • the stops 22, 23 also secure the stator 8 against undesired displacement during operation, it being understood, however, that during operation the stops 22, 23 are out of engagement with the stops 24, 25 of the stator 8.

Abstract

A test drill string for testing underground deposits of pumpable media found by boring a deep well comprises a test section (6) in the area of its bottom end, with measuring instruments, packing (4) for sealing the annular space above a perforated area (7) of the test section (6), and a delivery pump, in particular a Moineau pump, consisting of stator (8) and rotor (12). In this arrangement, the rotor (12) of the delivery pump, when delivery is required, can be lowered by means of a separate drive linkage (13) from the head of the bore hole (1) into the test drill string (T) down into an operating position and can be set in rotation in the operating position inside the stator (8) by means of a drive motor (M) on the surface. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Testrohrstrang zur Untersuchung von untertägigen, durch eine Tiefbohrung er­bohrten Lagerstätten von pumpfähigen Medien in einer Ausbildung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a test pipe string for examining underground deposits of pumpable media drilled through a deep bore in an embodiment in accordance with the preamble of claim 1.

Testrohrstränge der genannten Art finden insbesondere zur Untersuchung von Lagerstätten in bezug auf Formations­eigendrücke Anwendung, aus denen Schlußfolgerungen auf mögliche Fördermengen gezogen werden können. Mit Hilfe des in die Bohrung eingefahrenen Testrohrstranges ist es möglich, die Bohrung zu verschließen und den Verlauf des sich aufbauenden Formationsdruckes zu messen und die Meß­werte an die Erdoberfläche zu übertragen. Resultieren aus den Meßergebnissen interessante Fördererwartungen, so werden Proben des Mediums zur Untersuchung entnommen, gegebenenfalls Testförderungen über mehrere Stunden durch­geführt. Für eine solche Probenentnahme und für einen Testförderbetrieb finden aus einem Stator und einem Rotor bestehende Förderpumpen, insbesondere Moineau-­Pumpen,Anwendung, die entweder ständiger Bestandteil des Testförderstranges bilden oder aber im Bedarfsfalle in diesen eingebaut werden. Im letzteren Fall ist es er­forderlich, den gesamten Testrohrstrang aus der Bohrung aufzuholen und in diesen eine Förderpumpe einzubauen, wonach der Testrohrstrang wieder einzufahren ist, bevor der Probeentnahme-bzw. der Testförderbetrieb vorgenommen werden kann.Test tube strands of the type mentioned are used in particular for the investigation of deposits with respect to formation intrinsic pressures, from which conclusions can be drawn regarding possible production quantities. With the help of the test pipe string inserted into the borehole, it is possible to close the borehole and to measure the course of the formation pressure building up and to transmit the measured values to the earth's surface. If interesting funding expectations result from the measurement results, samples of the medium are taken for examination, and test funding may be carried out over several hours. For such a sampling and for a test conveyor operation, delivery pumps consisting of a stator and a rotor, in particular Moineau pumps, are used, which either form a permanent part of the test conveyor line or are installed in the latter if necessary. In the latter case, it is necessary to catch up the entire test tube string from the bore and to install a feed pump in it, after which the test tube string has to be retracted before the sampling or. the test funding operation can be carried out.

Testrohrstränge mit ständig eingebauter Förderpumpe be­dürfen zwar nicht der vorgennanten Arbeiten vor Durch­führung von Probeentnahme- oder Testförderbetrieb, jedoch sind Testförderstränge mit ständig eingebauter Förderpumpe sehr kostenaufwendig, wodurch sich die Kosten der Lager­stättenuntersuchung unerwünschte in allen jenen Fällen erhöhen, in denen sich die Lagerstätten schon nach den Druckmeßergebnissen als uninteressant darstellen. Hinzu kommt, daß die Lagerdichtungen einer ständig in den Testrohrstrang eingebauten Förderpumpe, die einen Druck­ausgleich von Ringraum zu Förderraum vermeiden, bei hohen Druckbelastungen versagen, was zum Druckausgleich zwischen Förder- und Ringraum der Bohrung führt und auf­wendige Instandsetzungsarbeiten erfordert.Test tube strings with a permanently installed feed pump do not require the aforementioned work before sampling or test operation is carried out, but test feed strings with a permanently installed feed pump are very costly, which increases the costs of the deposit investigation undesirably in all cases in which the deposits already increase after the Show pressure measurement results as uninteresting. In addition, the bearing seals of a delivery pump that is permanently installed in the test pipe string, which avoid pressure equalization from annulus to delivery area, fail at high pressure loads, which leads to pressure equalization between the delivery and annulus areas of the bore and requires extensive repair work.

Der Erfindung liegt die Aufabe zugrunde, einen einfachen, betriebssicheren sowie kostengünstigen Testrohrstrang zu schaffen, der im Bedarfsfalle zur Durchführung von Probe­entnahmen oder Testförderungen ohne Ausbau des Testrohr­stranges nachrüstbar ist.The invention is based on the object of creating a simple, reliable and inexpensive test tube string which, if necessary, can be retrofitted to carry out sampling or test funding without removing the test tube string.

Die Erfindung löst die Aufgabe ausgehend von einem Test­rohrstrang nach dem Oberbegriff des Anspruchs 1 mit den im kennzeichnenden Teil des Anspruchs angegebenen Merkma­len. Hinsichtlich wesentlicher weiterer Ausgestaltungen wird auf die Ansprüche 2 bis 8 verwiesen.The invention solves the problem on the basis of a test pipe string according to the preamble of claim 1 with the features specified in the characterizing part of the claim. With regard to essential further refinements, reference is made to claims 2 to 8.

Der Testrohrstrang nach der Erfindung ist in seiner Grundausführung einfach und preisgünstig und ohne Dichtungs­gefährdung bei hohen Druckbelastungen zu Testzwecken einsetzbar. Stellt sich heraus, daß eine Probeentnahme oder ein Testförderbetrieb zweckmäßig ist, kann der Testförderstrang schnell und einfach zu einem solchen ergänzt werden, der nunmehr einen Förderbetrieb durch­führen kann. Dies erfolgt durch Einfahren des Rotors oder der Rotor/Stator-Einheit mittels des Antriebsge­stänges für den Rotor von der Erdoberfläche aus, wobei der Testförderstrang in seiner eingebauten Lage ver­bleiben kann.The basic version of the test pipe string according to the invention is simple and inexpensive and can be used for test purposes at high pressure loads without any risk of sealing. If it turns out that a sampling or a test conveyor operation is expedient, the test conveyor train can be quickly and easily added to one which can now carry out a conveyor operation. This is done by retracting the rotor or the rotor / stator unit by means of the drive linkage for the rotor from the surface of the earth, it being possible for the test conveyor train to remain in its installed position.

Weitere Einzelheiten und Vorteile ergeben sich aus der Beschreibung und der Zeichnung, in der zwei Aus­führungsbeispiele des Gegenstands der Erfindung schema­tisch näher veranschaulicht sind. Im einzelnen zeigen:

  • Fig. 1 einen in eine Tiefbohrung eingesetzten Test­rohrstrang nach der Erfindung in einer verein­fachten, teils als Ansicht, teils als Schnitt wiedergegebenen Darstellung, und
  • Fig. 2 eine abgebrochene Darstellung ähnlich Fig. 1 zur Veranschaulichung einer abgewandelten Ausführungsform nach der Erfindung.
Further details and advantages emerge from the description and the drawing, in which two exemplary embodiments of the object of the invention are schematically illustrated in more detail. In detail show:
  • Fig. 1 shows a test tube string used in a deep bore according to the invention in a simplified representation, partly as a view, partly as a section, and
  • Fig. 2 is a broken view similar to Fig. 1 to illustrate a modified embodiment according to the invention.

Fig. 1 veranschaulicht einen Testrohrstrang T erfindungs­gemäßer Ausbildung in einer Teststellung in einem Bohr­loch 1, das verrohrt, d.h. mit einer Auskleidung 2 bzw. Futterrohr versehen ist. Der Testrohrstrang T be­grenzt mit der Auskleidung 2 des Bohrloches 1 einen Ringraum 3, der nahe dem unteren Ende durch einen Packer 4 und am oberen Ende durch eine druckdichte Verbindung von Auskleidung 2 und Testrohrstrang T bei 5 abgeschlossen ist.Fig. 1 illustrates a test tubing string T according to the invention in a test position in a borehole 1 that cased, i.e. is provided with a lining 2 or casing. The test pipe string T delimits an annulus 3 with the lining 2 of the borehole 1, which is closed near the lower end by a packer 4 and at the upper end by a pressure-tight connection of the lining 2 and the test pipe string T at 5.

Der Testrohrstrang T umfaßt im Bereich seines unteren Endes eine Testsektion 6, die nahe ihrem unteren Ende einen Perforationsbereich 7 aufweist und Meßgeräte (nicht dargestellt) umfaßt, wie sie für solche Test­rohrstränge üblich und bekannt sind. Der Packer 4 befindet sich unmittelbar oberhalb des Perforations­bereiches 7 der Testsektion 6.In the region of its lower end, the test tube string T comprises a test section 6, which has a perforation area 7 near its lower end and comprises measuring devices (not shown) as are customary and known for such test tube strands. The packer 4 is located directly above the perforation area 7 of the test section 6.

Oberhalb der Testsektion 6 befindet sich der Stator 8 einer Förderpumpe, die als Moineau-Pumpe ausgebildet ist. Bei dem Beispiel gemäß Fig. 1 ist dabei das Ge­häuse 9 des Stators 8 als Teil des Testrohrstranges T in diesen eingesetzt und mit ober- und unterseitig angren­zenden Strangbereichen bei 10 bzw. 11 verschraubt.The stator 8 of a feed pump, which is designed as a Moineau pump, is located above the test section 6. In the example according to FIG. 1, the housing 9 of the stator 8 is inserted as part of the test tube string T therein and is screwed to the string areas adjacent to the top and bottom sides at 10 and 11, respectively.

Der Rotor 12 der Förderpumpe ist am unteren Ende eines besonderen Antriebsgestänges 13 befestigt, mittels dem er vom Kopf des Bohrloches 1 her in den zu Testzwecken bereits in das Bohrloch 1,2 eingebauten Testrohrstrang T in eine Betriebsstellung absenkbar ist, in der er sich in einer Förderbetriebsstellung innerhalb des Stators 8 der Förderpumpe befindet. Die Fig. 1 zeigt den Rotor 12 bei dessen Absenken in die Betriebsstellung kurz vor Erreichen des Stators 8.The rotor 12 of the feed pump is attached to the lower end of a special drive linkage 13, by means of which it can be lowered from the head of the borehole 1 into the test pipe string T already installed in the borehole 1, 2 for test purposes, into an operating position in which it is in a Conveyor operating position is within the stator 8 of the feed pump. 1 shows the rotor 12 when it is lowered into the operating position shortly before the stator 8 is reached.

Das Antriebsgestänge 13 wird von einem Antriebsmotor M angetrieben, der in Betriebsstellung der Teile für einen Probenahme- oder Testförderbetrieb mit seinem Gehäuse 14 das obere Ende des Testrohrstranges T ver­schließt und eine abgedichtete Lagerung bei 15 für seine mit dem Antriebsgestänge 13 verbundene Antriebswelle 16 aufweist.The drive linkage 13 is driven by a drive motor M which, in the operating position of the parts for a sampling or test conveyor operation, closes the upper end of the test tube string T with its housing 14 and has a sealed bearing at 15 for its drive shaft 16 connected to the drive linkage 13.

Bei der Ausgestaltung nach Fig. 2 bilden der Stator 8 und der Rotor 12 eine gemeinschaftlich mittels des Antriebs­gestänges 13 in den Testrohrstrang T in die Betriebs­stellung einfahrbare und aus dieser aufziehbare Pumpen­einheit P, und in der Betriebsstellung der Pumpen­einheit P ist das Gehäuse 9 des Stators 8 im Testrohr­strang T diesem gegenüber abgedichtet und gegen Verdrehen gesichert.In the embodiment according to FIG. 2, the stator 8 and the rotor 12 form a pump unit P that can be moved into and pulled out of the test tube string T into the operating position by means of the drive rod 13, and the housing 9 of the stator 8 is in the operating position of the pump unit P. in the test tube string T sealed against this and secured against twisting.

Zur Abdichtung und zur Verdrehsicherung können alle bekannten und hierfür geeigneten Mittel Anwendung finden. Bei dem dargestellten Beispiel ist in Höhe der vorgesehenen Betriebsstellung der Testrohrstrang T mit einem Stützrohr­abschnitt 17 versehen, der innenseitig mit einem Verdreh­sicherungsprofil 18, z.B. einem Mehrkantprofil, einem Vielkeilprofil od.dgl.,versehen ist,und das Gehäuse 9 des Stators 8 weist an seiner Außenseite ein entsprechendes Gegenprofil 19 auf.All known and suitable means can be used for sealing and securing against rotation. In the example shown, at the level of the intended operating position, the test tube string T is provided with a support tube section 17 which is provided on the inside with an anti-rotation profile 18, e.g. a polygonal profile, a multi-spline profile or the like is provided, and the housing 9 of the stator 8 has a corresponding counter profile 19 on its outside.

Der Stützrohrabschnitt 17 ist in einem Bereich unterhalb des Verdrehsicherungsprofils 18 mit einem Verengungs­bereich 20 versehen und trägt in diesem eine umlaufende Dichtung 21, die in Betriebsstellung der Pumpeneinheit P mit dem profilfreien unteren Ende des Gehäuses 9 des Stators 8 in Dichtungseingriff steht.The support tube section 17 is provided in a region below the anti-rotation profile 18 with a constriction region 20 and carries in this a circumferential seal 21 which is in sealing engagement with the profile-free lower end of the housing 9 of the stator 8 in the operating position of the pump unit P.

Für das gemeinschaftliche Einfahren von Stator 8 und Rotor 12 der Pumpeneinheit P ist vorgesehen, daß der Rotor 12, der in seinem Stator 8 begrenzt axial verschieblich ist, im Abstand oberhalb und unterhalb seines Arbeits­teils mit je einem Anschlag 22 bzw. 23 versehen ist. Auch das Gehäuse 9 des Stators 8 weist einen oberen Anschlag 24 sowie einen unteren Anschlag 25 auf, und beim Einfahren der Pumpeneinheit P in den Testrohrstrang bzw. bei dessen Aufziehen gelangen die Anschläge 22,23 wechselweise mit den Anschlägen 24 bzw. 25 in Mitnahme- bzw. Stützeingriff. Während beim Einfahren der Pumpeneinheit P der Stator 8 zunächst über seinen Anschlag 25 auf dem Anschlag 23 des Rotors 12 ruht, kann im Bedarfsfalle und bei Widerständen durch den oberen Anschlag 22 der Rotor 12 über den An­schlag 24 des Stators 8 auf diesem eine abwärts gerich­tete Druckkraft ausüben.For the joint retraction of the stator 8 and rotor 12 of the pump unit P it is provided that the rotor 12, which is axially displaceable to a limited extent in its stator 8, is provided with a stop 22 and 23 at a distance above and below its working part. The housing 9 of the stator 8 also has an upper stop 24 and a lower stop 25, and when the pump unit P is moved into the test tube string or when it is pulled up, the stops 22, 23 alternately take along with the stops 24 and 25. or support intervention. While when the pump unit P is retracted, the stator 8 initially rests on the stop 23 of the rotor 12 via its stop 25, if necessary and in the event of resistance from the upper stop 22, the rotor 12 can have a downward pressure force on the stator 8 via the stop 24 of the stator 8 exercise.

Die Anschläge 22,23 sichern auch im Betrieb den Stator 8 gegen unerwünschte Verlagerungen, wobei sich jedoch versteht, daß im Betrieb die Anschläge 22,23 außer Ein­griff von den Anschlägen 24,25 des Stators 8 gelegen sind.The stops 22, 23 also secure the stator 8 against undesired displacement during operation, it being understood, however, that during operation the stops 22, 23 are out of engagement with the stops 24, 25 of the stator 8.

Claims (8)

1. Testrohrstrang zur Untersuchung von untertägigen, durch eine Tiefbohrung erbohrten Lagerstätten von pump­fähigen Medien, der im Bereich seines unteren Endes eine Testsektion (6) mit Meßgeräten, einen Packer (4) zur Ringraumabdichtung oberhalb eines Perforationsbereiches (7) der Testsektion (6) und eine aus Stator (8) und Rotor (12) bestehende Förderpumpe, insbesondere Moineau-Pumpe, umfaßt, dadurch gekennzeichnet, daß der Rotor (12) der Förder­pumpe bei Förderungsbedarf mittels eines gesonderten Antriebsgestänges (13) vom Kopf des Bohrloches (1) her in den Testrohrstrang (T) bis in eine Betriebsstellung absenkbar und in Betriebsstellung innerhalb des Stators (8) mittels eines obertägigen Antriebsmotors (M) in Um­drehung versetzbar ist.1.Test tube string for the investigation of underground deposits of pumpable media drilled through a deep bore, which has a test section (6) with measuring devices in the area of its lower end, a packer (4) for sealing the annular space above a perforation area (7) of the test section (6) and comprises a feed pump, in particular a Moineau pump, consisting of a stator (8) and rotor (12), characterized in that the rotor (12) of the feed pump, when funding is required, by means of a separate drive linkage (13) from the top of the borehole (1) the test tube string (T) can be lowered into an operating position and in the operating position within the stator (8) can be set in rotation by means of an above-ground drive motor (M). 2. Testrohrstrang nach Anspruch 1, dadurch gekenn­zeichnet, daß das Gehäuse (9) des Stators (8) als Teil des Testrohrstranges (T) in diesen eingesetzt und mit ober- und unterseitig angrenzenden Strangbereichen ver­bunden, insbesondere verschraubt ist.2. Test tube string according to claim 1, characterized in that the housing (9) of the stator (8) as part of the test tube string (T) used in this and connected to the upper and lower side adjacent strand areas, in particular is screwed. 3. Testrohrstrang nach Anspruch 1, dadurch gekenn­zeichnet, daß der Stator (8) und der Rotor (12) eine ge­meinschaftlich mittels des Antriebsgestänges (13) für den Rotor (12) in den Testrohrstrang in Betriebsstellung ein­ fahrbare und aus dieser aufziehbare Pumpeneinheit (P) bilden, und in der Betriebsstellung das Gehäuse (9) des Stators (8) im Testrohrstrang (T) diesem gegenüber ab­gedichtet und gegen Verdrehen gesichert ist.3. Test tube string according to claim 1, characterized in that the stator (8) and the rotor (12) a jointly by means of the drive linkage (13) for the rotor (12) in the test tube string in the operating position form a mobile pump unit (P) that can be pulled up, and in the operating position the housing (9) of the stator (8) in the test tube string (T) is sealed against this and secured against rotation. 4. Testrohrstrang nach Anspruch 3, dadurch gekenn­zeichnet, daß in Höhe der vorgesehenen Betriebsstellung für die Pumpeneinheit (P) der Testrohrstrang (T) einen mit einem Verdrehsicherungsprofil (18) versehenen Stütz­rohrabschnitt (17) aufweist und das Gehäuse (9) des Stators (8) an seiner Außenseite mit einem entsprechenden Gegenprofil (19) versehen ist.4. Test pipe string according to claim 3, characterized in that at the level of the intended operating position for the pump unit (P), the test pipe string (T) has a support pipe section (17) provided with an anti-rotation profile (18) and the housing (9) of the stator (8 ) is provided on its outside with a corresponding counter profile (19). 5. Testrohrstrang nach Anspruch 4, dadurch gekenn­zeichnet, daß der Stützrohrabschnitt (17) unterhalb seines Verdrehsicherungsprofils (18) mit einem Ver­engungsbereich (20) und in diesem mit einer umlaufenden , in Betriebsstellung der Pumpeneinheit (P) mit dem unteren Ende des Gehäuses (9) des Stators (8) in Dichtungs­eingriff stehenden Dichtung (21) versehen ist.5. Test tube string according to claim 4, characterized in that the support tube section (17) below its anti-rotation profile (18) with a constriction area (20) and in this with a circumferential, in the operating position of the pump unit (P) with the lower end of the housing (9 ) of the stator (8) in sealing engagement seal (21) is provided. 6. Testrohrstrang nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, daß der Rotor (12) der Pumpen­einheit (P) in seinem Stator (8) begrenzt axial ver­schieblich und im Abstand oberhalb und unterhalb seines Arbeitsteils mit je einem Anschlag (22,23) versehen ist, der beim Einfahren der Pumpeneinheit (P) in den Test­rohrstrang (T) bzw. bei dessen Aufziehen wechselweise mit einem Gegenanschlag (24,25) am Gehäuse (9) des Stators (8) in Mitnahmeeingriff gelangt.6. Test pipe string according to one of claims 3 to 5, characterized in that the rotor (12) of the pump unit (P) in its stator (8) limited axially displaceable and at a distance above and below its working part with a stop (22, 23rd ) is provided which, when the pump unit (P) moves into the test tube string (T) or when it is pulled open, alternately comes into engagement with a counter-stop (24, 25) on the housing (9) of the stator (8). 7. Testrohrstrang nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Testrohrstrang (T) an seinem obertägigen Ende druckdicht abgeschlossen ist.7. Test tube string according to one of claims 1 to 7, characterized in that the test tube string (T) is closed at its surface end pressure-tight. 8. Testrohrstrang nach Anspruch 7, dadurch gekenn­zeichnet, daß das obere Ende des Testrohrstrangs (T) durch das Gehäuse (14) des Antriebsmotors (M) verschlossen und eine abgedichtete Lagerung (15) für die Antriebswelle (16) des Antriebsmotors (M) vorgesehen ist.8. Test tube string according to claim 7, characterized in that the upper end of the test tube string (T) is closed by the housing (14) of the drive motor (M) and a sealed bearing (15) for the drive shaft (16) of the drive motor (M) is provided is.
EP88102813A 1987-02-27 1988-02-25 Test drill string for deep wells Expired - Lifetime EP0280294B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88102813T ATE79661T1 (en) 1987-02-27 1988-02-25 TEST PIPING STRING FOR DEEP DRILLING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3706378A DE3706378C1 (en) 1987-02-27 1987-02-27 Test pipe string for deep drilling
DE3706378 1987-02-27

Publications (3)

Publication Number Publication Date
EP0280294A2 true EP0280294A2 (en) 1988-08-31
EP0280294A3 EP0280294A3 (en) 1989-10-04
EP0280294B1 EP0280294B1 (en) 1992-08-19

Family

ID=6321930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102813A Expired - Lifetime EP0280294B1 (en) 1987-02-27 1988-02-25 Test drill string for deep wells

Country Status (3)

Country Link
EP (1) EP0280294B1 (en)
AT (1) ATE79661T1 (en)
DE (1) DE3706378C1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482912A1 (en) * 1990-10-23 1992-04-29 Halliburton Company Downhole pump for formation testing
WO1995030090A1 (en) * 1994-04-29 1995-11-09 Houttuin B.V. An installation and a method for pumping up fluid from the earth's crust
US10612542B2 (en) 2010-11-19 2020-04-07 Smith International, Inc. Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201019614D0 (en) 2010-11-19 2010-12-29 Eatec Ltd Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps
RU2605475C2 (en) * 2012-05-24 2016-12-20 Шлюмбергер Текнолоджи Б.В. Device and method of controlling or limiting rotor orbit in screw engines or pumps

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267459A (en) * 1939-01-09 1941-12-23 Fmc Corp Deep well pump
US3677665A (en) * 1971-05-07 1972-07-18 Husky Oil Ltd Submersible pump assembly
US4372379A (en) * 1981-10-06 1983-02-08 Corod Manufacturing Ltd. Rotary drive assembly for downhole rotary pump
GB2152145A (en) * 1983-12-14 1985-07-31 Bornemann J H Gmbh & Co An eccentric worm pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267459A (en) * 1939-01-09 1941-12-23 Fmc Corp Deep well pump
US3677665A (en) * 1971-05-07 1972-07-18 Husky Oil Ltd Submersible pump assembly
US4372379A (en) * 1981-10-06 1983-02-08 Corod Manufacturing Ltd. Rotary drive assembly for downhole rotary pump
GB2152145A (en) * 1983-12-14 1985-07-31 Bornemann J H Gmbh & Co An eccentric worm pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PRODUKT-PROSPEKT, Nr. A07518512, Dezember 1985, Norton Christensen Drilling Products; "Navi-Pump" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482912A1 (en) * 1990-10-23 1992-04-29 Halliburton Company Downhole pump for formation testing
WO1995030090A1 (en) * 1994-04-29 1995-11-09 Houttuin B.V. An installation and a method for pumping up fluid from the earth's crust
US10612542B2 (en) 2010-11-19 2020-04-07 Smith International, Inc. Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

Also Published As

Publication number Publication date
EP0280294B1 (en) 1992-08-19
EP0280294A3 (en) 1989-10-04
ATE79661T1 (en) 1992-09-15
DE3706378C1 (en) 1988-08-18

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