EP0204823B1 - Mantelrohr mit Seitentasche - Google Patents

Mantelrohr mit Seitentasche Download PDF

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Publication number
EP0204823B1
EP0204823B1 EP86900445A EP86900445A EP0204823B1 EP 0204823 B1 EP0204823 B1 EP 0204823B1 EP 86900445 A EP86900445 A EP 86900445A EP 86900445 A EP86900445 A EP 86900445A EP 0204823 B1 EP0204823 B1 EP 0204823B1
Authority
EP
European Patent Office
Prior art keywords
bore
mandrel
section
seating
opening
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
Application number
EP86900445A
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English (en)
French (fr)
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EP0204823A1 (de
Inventor
Douglass W. Crawford
William B. Crawford
Robert W. Dinning
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.)
DINNING Robert W
Original Assignee
DINNING Robert W
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
Priority claimed from US06/679,263 external-priority patent/US4765403A/en
Priority claimed from US06/789,313 external-priority patent/US4715441A/en
Application filed by DINNING Robert W filed Critical DINNING Robert W
Priority to EP89114541A priority Critical patent/EP0351884A1/de
Publication of EP0204823A1 publication Critical patent/EP0204823A1/de
Application granted granted Critical
Publication of EP0204823B1 publication Critical patent/EP0204823B1/de
Expired 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/122—Gas lift
    • E21B43/123—Gas lift valves
    • 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
    • E21B23/03—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets

Definitions

  • the present invention relates generally to side pocket mandrels for well flow control devices, such as gas lift valves.
  • Wells having a production string of tubing that includes vertically spaced side pocket mandrels arranged for placing, retrieving and manipulating flow control devices such as gas lift valves, are used extensively in gas and oil well production operations.
  • Each of the mandrels generally includes an open-topped side pocket that is laterally offset to the side of the mandrel bore.
  • a placement and removal tool known as a "kick- over" tool is lowered through the tubing to the level of the mandrel to effect placement or removal of a valve assembly in the side pocket.
  • the device can be a gas lift valve, and which is held in the pocket by a latch assembly that engages a shoulder above the top of the pocket.
  • Prior side pocket mandrels generally have been constructed with a main bore that is aligned with the bore ofthe well tubing and a side pocket that is laterally offset from the main bore. Examples of such devices are shown in United States Patent Nos. 2,824,525,3,268,006, and 3,741,299.
  • the main bore of the mandrel allows various wire line tools to pass therethrough for the performance of well operations belowthe mandrel while a flow control device is positioned in the side pocket.
  • the side pocket typically has polish bores at the upper and lower ends thereof that are engaged by spaced packing rings in the flow control devices, and a plurality of ports through the wall thereof to communicate gas from the well annulus to a valve element that controls the injection of the gas into the tubing string.
  • the mandrel assembly is made as a weldment of swage nipples to the ends of a round or oval pipe section, which is a construction that is inherently weak and subject to corrosion at the weld points. Moreover, a weldment is more difficult to protect through use of an internal plastic coating.
  • US-A-3,268,006 discloses a side pocket mandrel comprising a tubular body having a hollow interior that defines a main bore on one side thereof and another bore on the other side thereof including a valve seating bore having an axis which is spaced laterally with the axis of the main bore and is inclined at a small angle of between 1° and 3° with respect to said main bore; said valve seating bore including an opening which extends to the exterior of said tubular body, a polish section to be engaged by a gas lift valve member and a latch shoulder adjacent the seating section.
  • Prior art mandrels also have been provided with deflector means for protecting flow control devices positioned in the side pocket, and guide means for preventing tools moving through the well tubing from catching and hanging in the mandrel. Examples of such devices are disclosed in U.S. Patent Nos. 3,741,299,3,802,503,4,106,503 and 4,106,564.
  • the side pocket of the typical prior art mandrel generally is enclosed within the mandrel body, and thus the condition of the bore of the side pocket cannot be observed prior to running.
  • a worn-out or corroded bore in the side pocket may result in having to pull the entire string of well tubing - a very costly and time-consuming operation.
  • the machining of these mandrels has not allowed for precision work in connection with the maintenance of close tolerances, or visual inspection which invariably results in excessive manufacturing costs.
  • the flow control devices that are seated therein are in contact with noxious well fluids and subject to varying temperatures which require that the devices be designed to meet these conditions. This results in the use of expensive materials for construction of the flow control devices and the performance of tedious calculations for temperature corrections.
  • the usual flow control device seats within a side pocket that is aligned parallel to the longitudinal axis of the main bore of the mandrel.
  • two sets of packing are used to seal the flow control device within the pocket, one near the top of the device and one near the bottom. Due to the parallel alignment of the flow control device relative to the main bore, and to the use of the two sets of packing, a removal tool has to make a long straight pull on the flow control device upwardly through the side pocket in order to remove the device from its seat.
  • the conventional removal tools inherently pull on the valve latch at an angle which places the latch and the flow control device in a bind, thereby causing, in many instances, bent or broken flow control devices and latches. Such damage may result in a costly pulling job, and oftentimes may require the replacement of equipment.
  • a further disadvantage of prior structures is that the side pocket mandrels have required that retrievable-type flow control devices be utilized, negating the use of conventional type flow control devices within this type of equipment.
  • the present invention is characterised in that the mandrel is formed by an upper tubular body, by a short length seating section below said tubular body and by a main body portion below said seating section, in that said short length seating section has a diameter greater than that of the upper tubular body, said seating section having upper and lower faces, with said main bore extending fully from the upper face to the lower face of said seating section, in that said upper tubular body is welded to said upper face fully to surround said main bore, in that said valve seating bore extends fully from the upper face to the lower face of said seating section and is provided with a single polish bore of which opens directly into the upper face, beside said upper tubular body, to enable a gas lift valve member to project through said polish bore to the exterior of the mandrel and in that said main body portion is of the same diameter as said seating section and is welded to the lower face thereof.
  • a lower end portion of the side pocket mandrel of the present invention can be provided with generally longitudinally extending guide means on interior walls thereof which cooperate with instrumentalities on the kick-over tool to guide the flow control device into the cylindrical opening during upward movement of the kick-over tool within the mandrel.
  • instrumentalities are normally retracted as the kick-over tool is being run into the well, and are released to project outwardly and engage the guide means in response to manipulation of the kick-over tool as will be subsequently described.
  • the mandrel has in its upper end section an orienting sleeve having oppositely disposed helical lower surfaces that lead to a longitudinally extending groove.
  • the unique construction of the side pocket mandrel of the present invention obviated numerous disadvantages of the prior art structures.
  • the use of one packing and one seal or polish bore provides a simplified construction which is much easier to release when it is desired to remove the valve.
  • the flow control device protrudes into the annulus, as opposed to being confined within the mandrel body, which enables the side pocket mandrel to be constructed with a significantly shorter length, with consequent savings in material and manufacturing costs.
  • the inclination of the cylindrical opening with respect to central bore of the mandrel facilitates removal and placement of flow control devices because the direction of placement and removal forces is substantially aligned with the axis of the opening. Thus, the instances of bent or otherwise damaged latches and valve bodies is substantially reduced.
  • the oversizing of the cylindrical opening relative to the o.d. of the valve body enables the valve to pivot to some extent during placement and removal so that it is not put in a bind as in the case of a valve having two sets of packing located near its opposite ends. It also is possible to use conventional gas lift valves with the seal sub of the present invention, rather than being confined to the use of retrievable-type valves.
  • the use of guide means in the mandrel insures precise alignment of the valve with the cylindrical opening, and the provision of an inwardly biased pivot arm on the kick-over tool provides a construction that is considerably less likely to hang up in the tubing in which it is being run and retrieved, as compared to prior art devices of this general type.
  • a side pocket mandrel assembly indicated generally at 410 includes an upper tubular member 411 having internal threads 399 for connecting the same to a string of production tubing (not shown).
  • the tubular member 411 is secured by a transverse weld 455 to a seating section 412 of relatively short length, and the section 412 is secured by a transverse weld 456 to a main body section 413.
  • the main body section 413 preferably is circular in cross-section, and one side 414 of the hollow interior thereof is axially aligned with the bore of the tubular member 411.
  • the other side 415 of the hollow interior provides an elongated space for operation of the kickover arm of a gas lift valve setting or retrieving tool, such arm being typically a segmented subassembly that can be pivoted outward in order to align a valve attached to the end thereof for insertion into a valve seat or pocket in the mandrel.
  • the lower end of the main body section 413 is secured by a transverse weld 457 to a swage nipple 416 that has internal threads 417 for connection to the tubing.
  • the tubular member411 can have an orienting sleeve 420 fixed within the bore thereof.
  • the sleeve 420 has a pair of helical lower surfaces 421 that lead upward to an elongated vertical slot 422.
  • the slot 422 is arranged to receive a key on a setting tool as it is moved upward therethrough, in order to rotationally orient the tool in a manner such that the kickover arm and valve are generally aligned within the region 415 of the body section 413.
  • Such orientation is achieved by the fact that the key will first encounter one of the inclined surfaces 421 and be guided thereby into the slot 422.
  • a second key that initially is vertically misaligned with the first- mentioned key will then encounter one of the surfaces 421 during continued upward movement, and the camming action as the keys are forced into vertical alignment achieves proper orientating and causes the kickover tool to trigger the release of guide rollers or wings on the arm assembly.
  • the wings then cause the inwardly biased arm assembly to be pivoted outward during continued upward movement.
  • the seating section 412 of the present invention is shown in detail in Figures 2 and 3.
  • the section 412 is generally tubular, and has a main bore 425 machined to one side thereof.
  • the upper end of the bore 425 opens through an annular lip 426 which is chamfered to facilitate welding to the lower end of the tubular member 411.
  • Another bore 427 is formed on the opposite side of the section 412, and has its central axis 428 slightly inclined downward and inward with respect to the axis 429 of the main bore 425.
  • the angle of inclination may be, for example, from 1-1/2° to 3°.
  • the upper end portion 430 of the bore 427 has a reduced diameter (for example 28.57mm (1.125 inches), and is machined as a polish bore that receives an annular packing assembly of a gas lift valve or other flow control device shown in phantom lines in Figure 24.
  • the bore 430 opens to the outside of the mandrel at its upper end as shown, and is joined by an annular inclined surface 431 to a larger diameter bore 432 which receives the latch element (for example collet) of a typical latch assembly which releasably connect the gas lift valve, or other flow control device, in place.
  • the latch element has shoulder surfaces that engage an inclined shoulder 433 at the lower end of the enlarged bore 432, and the shoulder 433 forms the upper side of an inwardly directed flange 434 that has another inclined annular shoulder 435 at its lower side.
  • the shoulder 435 is at the upper end of another enlarged diameter bore 436 that opens through the lower end surfaces 440 of the section 412.
  • the lower end of the section 412 is bevelled at 437, again to facilitate welding to the upper end of the main body section 413.
  • a generally frusto-conical surface 440 is machined in the lower portion of the section 412 as shown, and a vertical slot 441 is milled out in the wall that separates the bores 430 and 425 in order to provide for the inward flow of lift gas.
  • the slot 441 extends upward to a point 442 adjacent the "no go" shoulder431, and preferably has a width such that the latch shoulder 433 extends circumferentially through an angle of about 290° (145° to either side of a radial line that intersects the respective centerlines of the bores 428 and 429) to provide ample stop surface area for the latch element.
  • the slot 441 also functions as a guide for proper rotational orientation of the body of the gas lift valve to radially align a port in the neck of the valve such that the lift gas is injected into the bore 425 where it is admixed and entrained in the upward flow of production fluids.
  • the central bore 42 have a transverse dimension of, for example, 69.85mm (2.750 inches) up to an inclined surface 443 where the diameter is reduced to 62mm (2.441 inches), which is the same dimension as the inner diameter of the orienting sleeve 420.
  • these dimensions are applicable to a typical size side pocket mandrel, for example a mandrel sized to be connected in a 73.02mm (2-7/8") o.d. tubing string.
  • the swage nipple 415 shown in Figure 1B has fixed therein a ramp member 450 that is generally semi-circular in section and has inclined surfaces 451 and 452 on opposite sides thereof.
  • the upper and lower ends of the member 450 can be oppositely inclined, as shown, so that no transverse shoulders are formed which could cause other tools to hang up on the member.
  • a pair of oppositely disposed, elongated rails 451 are mounted inside the main body section 413 between the bore 414 and the region 415, in positions such that outwardly facing surfaces 452 thereof are generally vertically aligned with the innermost surface of the seating bore 430.
  • the lower end of each rail 451 may be inclined at 453 to present a continuous ramp surface, and the upper end of each rail can terminate at approximately the upper end of the body section 413.
  • the tubular member 411 is joined to the upper end of the receptacle section 412 by the transverse weld 455, and the lower end of the receptacle section 412 is joined to the upper end of the body section 413 by the transverse weld 456.
  • the lower end of the body 413 is joined to the swage nipple by a transverse weld 457.
  • a guard lug 460 may be fixed to the outside of the tubular member 411 at a distance from the upper end of the section 412 such that it is closely adjacent the nose of the gas lift valve when the valve is latched in place.
  • the lug prevents the valve from being damaged in the event the tubing is moved upward in the casing while the valve is in place.
  • the guard lug 460' may have a polish bore 462 formed therein on a diameter that is slightly less than the diameter of the bore 430, for example 1.000 inch.
  • a gas flow port 463 communicates the polish bore 462 with the interior bore of the tubular member 412. This feature enables a more conventional gas lift valve to be used having spaced apart packing rings that engage the respective bores 430 and 461, and a gas outlet port through the end of the nose thereof which is packed off in the bore 462.
  • the member 412 which houses an orienting sleeve 420 could be attached to a swage nipple and body section as previously described, except inverted, or turned upside- down.
  • the seating section 413 would be inverted also and would be located near the lower end of the mandrel, whereby the polish bore 430 would open downward.
  • the tubular member to which the section 413 is welded, in this configuration would not have an orienting sleeve therein.
  • the entire assembly as shown in Figures 24A and 24B could be inverted, and the position of the orienting sleeve 420 reversed so that the guide surfaces would still lead in the upward direction to the slot.
  • the guard lug with or without polish bore and gas port, could be used.

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  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Lift Valve (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
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  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
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Claims (10)

1. Mantelrohr mit einem rohrförmigen Körper (412,413) mit einem hohlen Innenraum, der an einer Seite des Körpers eine Hauptbohrung (425,414) und an seiner anderen Seite eine andere Bohrung (415, 530) festlegt, die eine Ventilsitzbohrung (427) enthält, die eine Achse besitzt, die seitlich von der Achse der Hauptbohrung beabstandet und in Bezug auf die Hauptbohrung unter einem kleinen Winkel zwischen 1° und 3° geneigt ist, wobei die Ventilsitzbohrung eine Öffnung, die sich zur Aussenseite des rohrförmigen Körpers erstreckt, einen geschliffenen Abschnitt (430), der durch ein Gasdruckventilelement besetzt ist, und eine Einrastschulter aufweist, die in der Nachbarschaft des Sitzabschnittes vorgesehen ist, dadurch gekennzeichnet, dass das Mantelrohr (410) durch einen oberen rohrförmigen Körper (411), durch einen kurzen Sitzabschnitt (412) unter dem rohrförmigen Körper (411) und durch einen Hauptkörperabschnitt (413) unter dem Sitzabschnitt (412) gebildet ist, dass der kurze Sitzabschnitt (412) einen Durchmesser besitzt, der grösser ist als der des oberen rohrförmigen Körpers (411), wobei der Sitzabschnitt (412) eine obere und eine untere Stirnfläche besitzt und die Hauptbohrung (425) sich vollständig von der oberen Stirnfläche zur unteren Stirnfläche des Sitzabschnittes erstreckt, dass der obere rohrförmige Körper vollständig an die obere Stirnfläche angeschweisst ist, um die Hauptbohrung zu umgeben, dass die Ventilsitzbohrung sich vollständig von der oberen Stirnfläche zur unteren Stirnfläche des Sitzabschnittes erstreckt und mit einer einzigen geschliffenen Bohrung (430) versehen ist, die sich direkt in die obere Stirnfläche hinein neben dem oberen rohrförmigen Körper öffnet, um einem Gasdruckventilelement zu ermöglichen, durch die geschliffene Bohrung zum Äusseren des Mantelrohres vorzustehen, und dass der Hauptkörperabschnitt (413) denselben Durchmesser besitzt wie der Sitzabschnitt (412) und an dessen untere Stirnfläche angeschweisst ist.
2. Mantelrohr nach Anspruch 1, dadurch gekennzeichnet, dass der Sitzabschnitt (412) zwischen der Sitzbohrung (427) und der Hauptbohrung (425) eine sich in Längsrichtung erstrekkende Öffnung (441) besitzt, die zum Gasdurchlass dient.
3. Mantelrohr nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Einrastschulter (433) im allgemeinen ringförmig ausgebildet ist und zu beiden Seiten einer radialen Linie, welche die Achse (428) der Hauptbohrungen (414,425) und die Achse (429) der Sitzbohrung (427) kreuzt, einen Winkel von annähernd 145° einschliesst.
4. Mantelrohr nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass das Mantelrohr (410) ausserdem eine Orientierungshülse (420) enthält, und dass die Orientierungshülse (420) mit einem Führungsschlitz (422) versehen ist, der zum Greifen und drehenden Orientieren eines Schlüssels eines Rückstosswerkzeugs eine schraubenlinienförmige Fläche (421) enthält.
5. Mantelrohr nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an das untere Ende des Körperabschnittes (412) Übergangsnippeleinrichtungen (416) (bei 457) angeschweisst sind, dass am unteren Ende der Übergangsnippeleinrichtung (416) ein Gewinde (417) vorgesehen ist, und dass das rohrförmige Element (411) an seinem oberen Ende ein Gewinde (399) aufweist, wobei die Gewinde (411 und 399) zum Anschluss des Mantelrohres an einen Rohrstrang vorgesehen sind.
6. Mantelrohr nach Anspruch 5, dadurch gekennzeichnet, dass in den Übergangsnippeleinrichtungen (416) Rampen (450) befestigt sind, die an ihren entgegengesetzten Seiten geneigte Flächen (452) besitzen, und dass weitere Führungen (451) sich in Längsrichtung entlang den Innenwandflächen des Körperabschnittes (413) von den geneigten Flächen (452) zu einer Stelle in der Nachbarschaft des unteren Endes des Sitzabschnittes erstrecken.
7. Mantelrohr nach Anspruch 6, dadurch gekennzeichnet, dass die Rampen (450) ein Element aufweisen, das im diagonalen Querschnitt im allgemeinen halbkreisförmig ist und an seinen entgegengesetzten Enden nach innen geneigte Flächen (452) besitzt, wobei die Führungen (451) ein Paar Schienen enthalten, die an den Innenwänden an einer Stelle zwischen der Hauptbohrung (414) und der anderen Bohrung (415) angebracht sind.
8. Mantelrohr nach Anspruch 1, dadurch gekennzeichnet, dass das Mantelrohr (410) ausserdem an der Aussenseite des rohrförmigen Elementes (411) eine Schutzeinrichtung (460) enthält, die einen ausgewählten Abstand über und fluchtend mit der nach oben gewandten Öffnung des geschliffenen Abschnittes (430) vorgesehen ist.
9. Mantelrohr nach Anspruch 8, dadurch gekennzeichnet, dass die Führungseinrichtung (460) eine zusätzliche geschliffene Bohrung (462) besitzt, die in deren Innerem ausgebildet ist, und dass ein Gasströmungsdurchlass (463) die zusätzliche geschliffene bzw. polierte Bohrung (462) mit dem Inneren des rohrförmigen Körpers verbindet.
10. Mantelrohr nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass am oberen Ende des Sitzabschnittes (412) eine sich nach aussen erstreckende Lippe (426) vorgesehen ist, welche die Öffnung der Hauptbohrung (414) umgibt, wobei die Lippe (426) an ihrer Aussenfläche eine abgeschrägte Kante besitzt.
EP86900445A 1984-12-07 1985-12-04 Mantelrohr mit Seitentasche Expired EP0204823B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP89114541A EP0351884A1 (de) 1984-12-07 1985-12-04 Vorrichtung zum Steuern eines Durchflusses und Abdichtungselement

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US06/679,263 US4765403A (en) 1984-12-07 1984-12-07 Apparatus for placing and removing well flow control devices
US679263 1984-12-07
US789313 1985-10-18
US06/789,313 US4715441A (en) 1985-10-18 1985-10-18 Side pocket mandrel

Related Child Applications (3)

Application Number Title Priority Date Filing Date
EP89114538A Division EP0345830A3 (de) 1984-12-07 1985-12-04 Abweichungswerkzeug
EP89114538.5 Division-Into 1989-08-07
EP89114541.9 Division-Into 1989-08-07

Publications (2)

Publication Number Publication Date
EP0204823A1 EP0204823A1 (de) 1986-12-17
EP0204823B1 true EP0204823B1 (de) 1990-08-29

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Application Number Title Priority Date Filing Date
EP86900445A Expired EP0204823B1 (de) 1984-12-07 1985-12-04 Mantelrohr mit Seitentasche
EP89114541A Withdrawn EP0351884A1 (de) 1984-12-07 1985-12-04 Vorrichtung zum Steuern eines Durchflusses und Abdichtungselement
EP89114538A Withdrawn EP0345830A3 (de) 1984-12-07 1985-12-04 Abweichungswerkzeug

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Application Number Title Priority Date Filing Date
EP89114541A Withdrawn EP0351884A1 (de) 1984-12-07 1985-12-04 Vorrichtung zum Steuern eines Durchflusses und Abdichtungselement
EP89114538A Withdrawn EP0345830A3 (de) 1984-12-07 1985-12-04 Abweichungswerkzeug

Country Status (4)

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EP (3) EP0204823B1 (de)
AU (3) AU585298B2 (de)
DE (1) DE3579457D1 (de)
WO (1) WO1986003544A2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4624309A (en) * 1984-09-24 1986-11-25 Otis Engineering Corporation Apparatus for monitoring a parameter in a well
US4744415A (en) * 1987-04-24 1988-05-17 Crawford Douglass W Kickover tool for placing and removing well flow control devices
AU629199B2 (en) * 1988-02-03 1992-10-01 William B. Crawford A side pocket mandrel
US4976314A (en) * 1988-02-03 1990-12-11 Crawford William B T-slot mandrel and kickover tool
US5058670A (en) * 1989-05-15 1991-10-22 Crawford Douglas W Oriented valve and latch for side pocket mandrel
NO20170516A1 (en) * 2017-03-29 2018-08-27 Petroleum Technology Co As Well component with deflector surface

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Publication number Priority date Publication date Assignee Title
US2664162A (en) * 1948-06-24 1953-12-29 Sid W Richardson Inc Means for installing and removing flow valves
US2679904A (en) * 1949-11-23 1954-06-01 Sid W Richardson Inc Means of installing and removing flow valves or the like
US2679903A (en) * 1949-11-23 1954-06-01 Sid W Richardson Inc Means for installing and removing flow valves or the like
US2824525A (en) * 1954-07-26 1958-02-25 Sid W Richardson Inc Offset mandrel for small diameter tubing
US2988146A (en) * 1958-06-02 1961-06-13 Otis Eng Co Offset mandrel and tools
US3075586A (en) * 1958-07-02 1963-01-29 Otis Eng Co Nipple with lateral port control
US3268006A (en) * 1962-09-10 1966-08-23 Shell Oil Co Method and apparatus for installing and retrieving well tools in well strings
US3741299A (en) * 1971-12-15 1973-06-26 Camco Inc Sidepocket mandrel
US3802503A (en) * 1972-03-01 1974-04-09 Ginn F Mc Well tubing mandrel with combination guard and guide
US3771597A (en) * 1972-09-11 1973-11-13 Camco Inc Fluid system for moving subsurface well equipment in well tubing
FR2220005B1 (de) * 1973-03-02 1976-05-21 Flopetrol Auxil Product Petrol
US4106563A (en) * 1977-11-03 1978-08-15 Camco, Incorporated Sidepocket mandrel
US4416330A (en) * 1982-02-19 1983-11-22 Otis Engineering Corporation Side pocket mandrel
US4524833A (en) * 1983-09-23 1985-06-25 Otis Engineering Corporation Apparatus and methods for orienting devices in side pocket mandrels

Also Published As

Publication number Publication date
AU3955389A (en) 1989-11-30
EP0345830A3 (de) 1990-01-17
AU585298B2 (en) 1989-06-15
DE3579457D1 (de) 1990-10-04
EP0351884A1 (de) 1990-01-24
WO1986003544A2 (en) 1986-06-19
EP0204823A1 (de) 1986-12-17
AU3955189A (en) 1989-11-30
AU5206086A (en) 1986-07-01
EP0345830A2 (de) 1989-12-13
WO1986003544A3 (en) 1986-07-31

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