EP0015726A1 - Méthode concernant le pompage de fluide le long d'une structure tubulaire dans un trou de forage et composant tubulaire utilisable dans une telle structure - Google Patents

Méthode concernant le pompage de fluide le long d'une structure tubulaire dans un trou de forage et composant tubulaire utilisable dans une telle structure Download PDF

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Publication number
EP0015726A1
EP0015726A1 EP80300608A EP80300608A EP0015726A1 EP 0015726 A1 EP0015726 A1 EP 0015726A1 EP 80300608 A EP80300608 A EP 80300608A EP 80300608 A EP80300608 A EP 80300608A EP 0015726 A1 EP0015726 A1 EP 0015726A1
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EP
European Patent Office
Prior art keywords
plug member
fluid
tubular structure
along
tubular
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.)
Withdrawn
Application number
EP80300608A
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German (de)
English (en)
Inventor
Roger Dale Crooks
Michael Brouse
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Individual
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Individual
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Publication date
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Publication of EP0015726A1 publication Critical patent/EP0015726A1/fr
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    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
    • E21B33/16—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes using plugs for isolating cement charge; Plugs therefor
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • 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
    • E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
    • 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
    • E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes

Definitions

  • the present invention relates to pumping fluids in well bores, and is concerned in particular but not exclusively with methods for use in connection with cementing operations in tubular structures in well bores, and components for use in such methods.
  • Operations occuring in the drilling of bores for wells such as oil, gas or water wells include the cementing into the bore of a hollow cylindrical steel casing formed of a series of lengths of casing known as casing joints, joined together to give a continuous casing known as a casing string.
  • the cementing process normally occurs at the end of drilling of each stage of the bore of the well, or formation as the bore is known.
  • the drill string is removed and is replaced by a casing string having an outer diameter less than the formation.
  • the formation is maintained by the weight of a packing fluid containing for example barium sulphate among other constituents.
  • This fluid is pumped down the drill and up to the surface during drilling to carry away the cuttings, cool the bit and hold back the pressure from the formation(among other functions), and is retained in the formation while the casing is placed in the bore.
  • a cementing fluid which usually comprises a cement and water slurry.
  • the cementing fluid displaces the packing fluid and passes out of the casing string at the bottom of the bore and is forced back up the outside of the casing string to displace packing fluid from the annular space between the outer wall of the casing and the inside of the bore.
  • the bottom of the casing is terminated by an element known as a float shoe or float valve resting at the bottom of the formation.
  • cementing fluid is pumped into the casing to fill the annular space around the casing back to the required height(which may be to the top of the formation) with virtually no cement in the bottom of the inside of the casing.
  • This operation is attempted by placing in the casing string above a calculated quantity of cementing fluid a fluid displacement plug which is driven along the casing string by pumping a displacement fluid under pressure behind the plug.
  • the displacement fluid may be similar to the packing fluid, for example a slurry of water, barium sulphate and other materials.
  • the present practice is to calculate the volume of displacement fluid needed to be pumped into the casing to fill the hollow inside of the casing and to carry the plug to the bottom, and then to make an estimate of the volumetric efficiency of the displacing pump and the overall integrity of the displacing system(i.e. valves, casing, joins and so on). It is then attempted to pump in the calculated volume of displacement fluid by counting pump strokes and relating the count to the estimated performance of the pump, endeavouring to make allowance for leakage in the pipes,valves and other parts of the pumping system.
  • Premature grounding of the plug can be detected by detecting a surge of pressure in the surface pumping system, but by that time the damage has usually taken place by overdisplacement of the cementing fluid. It is known practice to detect the occurence of unwanted activity in a well bore by detecting a pressure change in the pumping system, and this is used for example to detect a blocked jet in the cleaning fluid supply to a drilling head, or to detect a cave-in or other fault in a formation. However, such prior use of monitoring the pressure in the pumping system has only detecting unwanted accidental occurences after the stage when damage has occured.
  • cementing operation in which similar problems arise is the operation of cementing the bottom of a well bore at a stage of the drilling operation itself.
  • cement is pumped down the hollow centre of the drill pipe or string and is forced back up the outside of the drill pipe in a similar manner to that described for a casing string.
  • the cement is forced down the drill pipe by a following displacement fluid, but no plug is used to separate the cement and the displacement fluid.
  • the drill pipe is withdrawn, leaving the cement at the bottom of the well bore to set as required.
  • a method of monitoring the pumping of fluid along a tubular structure in a bore of a well comprising the steps of driving a movable plug member along a tubular structure in a bore of a well by a pumping system pumping fluid under pressure behind the plug member, interrupting the passage of the plug member along the tubular structure by an obstruction means placed at a known distance along the tubular structure, and detecting a surge of pressure in the pumping system resulting from the said interruption of the movement of the plug member to indicate the position of the plug member at the time of detection of the pressure surge.
  • the plug member may conveniently be formed by a fluid displacement plug suitable for displacing cementing fluid along the tubular structure.
  • a plug for convenience in the subsequent description the plug member will sometimes be referred to as a plug.
  • the tubular structure may comprise the hollow cylindrical structure used to drive a drill during the drilling process and known as a drill pipe or drill string.
  • the tubular structure may comprise a hollow cylindrical structure used to line a completed or partly completed well bore and known as a casing string.
  • Tubular structures such as drill pipes and casing strings are generally referred to in the field of drilling as “tubulars" and the present invention finds use in operations in such "tubulars".
  • the interruption of the plug movement is conveniently a momentary check of the movement of the plug which may be may not bring the plug to rest before resuming its movement under the build up of pressure.
  • the method described has particular use in the cementing processes set out above, and may be used merely to give an indication that a displacement plug is approaching the bottom of a casing string or drill pipe, or, as will be described hereinafter, to calibrate the pumping system. Conveniently the method may be used both to give a forewarning of the end of the displacement process and to calibrate the system.
  • fluid means any liquid, semi-liquid slurry or other flowable material of the kind used in pumping operations in well bores.
  • the invention has application in many kinds of land or off-shore oil, gas or water wells and many different fluids are used in such systems.
  • a method of calibrating a pumping system for pumping fluid along a tubular structure in a bore of a well comprising the steps of driving a fluid displacement-plug along a tubular structure in a bore of a well from a known reference position by pumping displacement fluid under pressure behind the plug, interrupting the passage of the plug along the tubular structure at a known distance from the said reference position, detecting a surge of pressure in the pumping system resulting from the interruption of the passage of the plug, and measuring a working parameter of the pumping system from the time of plug movement from the said reference position to the time of detection of the said pressure surge to provide a measure of the said working parameter related to a known volume of displacement fluid corresponding to the said known distance along the tubular structure.
  • the said known reference position of the plug is constituted by the top of the tubular structure at the surface of the bore, so that the working parameter of the pumping system is measured from the time that the plug is inserted in the tubular structure and the pumping operation started.
  • the measurement of working parameter referred to will be a count of pump strokes. It will be appreciated that once a relationship has been established in operating conditions between a count of pump strokes and a volume of displacement fluid which has taken the plug to the obstructing means, it is a simple matter to calculate how many further pump strokes will be needed to carry the plug the remaining distance to the bottom of the tubular structure, or other required position.
  • a method of carrying out a cementing operation in a bore of a well comprising the steps of forcing cementing fluid along a tubular structure by a fluid displacement plug driven along the tubular structure by a pumping system pumping a displacement fluid under pressure behind the plug, interrupting the passage of the plug along the tubular structure by an obstruction means placed at a known distance along the tubular structure, detecting a surge of pressure in the pumping system resulting from the said interruption of the plug movement to indicate the position of the plug, and terminating the cementing operation in dependence upon the detection of the said pressure surge.
  • tubular component for use in a tubular structure in a bore of a well, the tubular component having obstruction means for interrupting passage through the tubular component of a plug member during pumping of fluid through the tubular component.
  • tubular component may consist of a casing joint, which term means a length of casing adapted to be joined with other lengths of casing to form a casing string for use in a bore of a well.
  • tubular structure comprises a drill pipe
  • tubular component may consist of a corresponding joint of the drill pipe or string.
  • tubular joints or merely as joints.
  • the obstruction means may have a shape such as to allow a fluid displacement plug to move past the obstruction means under the force of displacement fluid behind the plug, but such as to prevent return of the plug back up the drill pipe under the force of cementing fluid displaced outside the drill pipe.
  • Such a use of an obstruction means embodying the invention may be used to reduce or avoid the "U-tube" effect described hereinbefore as a disadvantage of known cementing operations.
  • an obstruction means may be used in a cementing operation in a drill pipe or other tubular structure as set out in the previous paragraph without being used to determine a finishing time for the cementing operation.
  • a method of depositing cement in a bore of a well comprising the steps of forcing cementing fluid along a tubular structure by a fluid displacement plug driven along the tubular structure by a pumping system pumping a displacement fluid under pressure behing the plug, and driving the plug past an obstruction means placed in the tubular structure at or in the region of the bottom of the well bore and having a shape such as to prevent or inhibit return of the plug along the tubular structure past the obstruction means.
  • a tubular component for use in a tubular structure in a bore of a well, the tubular component having obstruction means shaped to allow passage through the tubular component of a fluid displacement plug during pumping of fluid through the tubular component, but shaped to prevent or inhibit return of the plug past the obstruction means under the influence of fluid displaced from the tubular structure by the plug.
  • the obstruction means is adapted for disposal after the said interruption of the cement displacement plug, conveniently the obstruction means being adapted for disposal after the cementing process by drilling out of the obstruction means.
  • the obstruction means may be adapted for disposal in other ways, for example it may be adapted to disintegrate, or to be displaced as soon as it has performed its function of interrupting the cement displacement plug.
  • the obstruction means may be constructed to remain in the tubular joint permanently or semi-permanently after it has effected interruption of the plug.
  • the said tubular component or joint has along at least a portion of its length an inner diameter less than the inner diameter of the tubular structure in which the component is adapted to be coupled in operation.
  • the said lesser inner diameter may be provided along the whole length of the tubular joint, but it can be that the obstruction means is provided by a portion of the tubular joint having a lesser inner diameter than the inner diameter of the remainder of the tubular joint.
  • the obstruction means is provided by a lining along at least part of the inner surface of the tubular joint of a material different from the material of the wall of the tubular joint, the material of the lining being chosen to allow easy removal if necessary by drilling out at a later stage of operation, for example after the cementing process is completed.
  • preferred materials for obstruction means are natural or synthetic rubber, or synthetic plastics material,and conveniently the material is bonded to the wall of the tubular joint.
  • the obstruction means may comprise projections extending inwardly from the wall of the tubular component, for example, flanges, studs, lugs, fluting or other projections.
  • the obstruction means may comprise a web, spider or other form of bridging member extending across the tubular component and adapted to interrupt the passage of the plug member through the tubular component, but adapted to be broken by the plug member so as to allow the plug member to proceed past the bridging member after the said interruption.
  • the bridging member comprises a moulded rubber cross positioned across the tubular component at the upper end thereof. Such a rubber cross may be arranged to be breakable by a fluid displacement plug driven by a pressure of displacement fluid in the range 600 to 800 p.s.i. (lbs/sq. inch), conveniently 700 p.s.i.
  • Figure 1 there is shown a well bore or formation 11 cut in rock or other ambient material 12 and terminating at a base 13 of the formation.
  • a casing string indicated generally at 14 and composed of a number of casing joints of which 4 are shown at 15, 16, 17 and 18.
  • the casing joints are interconnected by threaded sleeves 19, and the bottom casing joints 18 is terminated by a float shoe or float valve 20.
  • the formation 11 in Figure 1 is shown at stage at which the drill string(not shown) has been removed after drilling a stage down to the base 13, and the casing string 15 has been inserted in the bore 11 to leave between the outer surface of the casing string 15 and the inner : surface of the formation 11 an annular space 21 initially filled with a packing fluid 22.
  • a calculated volume of cementing fluid 23 which has been forced down the casing string 14 by a displacement plug 24 driven along the casing string 14 by a displacement fluid 25 behind the plug 24.
  • the cementing fluid 23 has been forced around the bottom of the float shoe 20 and back up the annular space 21 to reach a level approximately the same as the level of cementing fluid 23 within the casing string 14.
  • the pressure detected at the surface by monitoring the pressure in the pumping system changes from an initial negative pressure to a positive pressure as the cement fluid in the annular space 21 passes the cement fluid in the inside of the casing string 14.
  • a casing joint 16 Connected in the casing string 14 is a casing joint 16 embodying the present invention and including an obstruction means formed by an inner rubber lining 26 extending along part of the length of the casing joint 26.
  • the lining 26 extends along most of the length of the casing joint 16, and provides an inner diameter at the lining of lesser diameter than the inner diameter of the casing 16 at top and bottom portions 27 and 28.
  • the inner diameter of the casing joint 16 at the regions 27 and 28 is conveniently the same inner diameter as for other casing sections in the stage of the casing string.
  • the lining 26 is of natural or synthetic rubber and is bonded to the interior of the steel casing joint 16.
  • the thickness of the lining 26 may be 21 ⁇ 2 in.
  • the inner diameter of the casing joint 16 in the regions 27 and 28 is 261 ⁇ 2 in.
  • the inner diameter at the lining 26 may be 211 ⁇ 2 in.
  • the length of the casing joint 16 may be 120in., and the length of the lining 26 may be about 19in.
  • the displacement plug 24 comprises a central metal core 29, for example of aluminium, carrying four rubber cone-shaped sealing members 30 which are of a diameter such as to press outwardly against the inner surface of the casing string 14, and effect a seal therewith.
  • the plug 24 When the plug 24 reaches the lining 16 it experiences a momentary check or interruption to its movement along the casing string 14 while the pressure in the displacement fluid 25 rises sufficiently to carry the plug 24 past the lining 24 and onwards down the casing string 14.
  • the extent of this interruption to the plug movement for example as to whether the plug comes to rest or merely slows in its movement, will depend upon the depth of the lining 26, and the resilience or design of the cones 30 on the plug 24.
  • the effect of the interruption of the plug movement is a pressure surge in the pumping system which is detected at the surface pumping equipment.
  • the method of the embodiment of the invention shown operates in the following manner. Firstly there is deposited into the casing string 14 the quantity of cementing fluid 23 which is calculated to provide the required height of cement up the outer annular space 21. Next there is inserted in the top of the casing string 14 the displacement plug 24, and the plug is driven down the casing string 14 by pressure of the displacement fluid 25. The number of strokes of the pumping apparatus (not shown) is counted from the start of the movement of the plug 24 from the top of the casing string 14 (constituting a known reference position) and the pressure in the pumping system at the surface is monitored until the pressure surge is detected which results from the interruption of the plug movement by the obstruction means 26.
  • the pumping operation can be stopped and the required relationship between the number of pump strokes counted and the volume of displacement fluid pumped (calculated from the known distance of the lining 26 from the surface)is determined.
  • This calibration factor is then-applied to the volume of displacement fluid required to fill the remainder of the casing string 14 down to the float shoe 20(previously calculated from the known length of the casing string 14)to give a number of pumping strokes required to complete the operation.
  • the pumping is then restarted and continued for the required number of strokes, which brings the plug 24 to seat and seal on the float shoe 20.
  • the cementing fluid is then left to harden around the outside of the casing string 14, and the stage of casing is completed.
  • drill bit is lowered down the inside of the casing string, and is easily able to drill away the lining 26, which is made of material suitable to allow easy removal at this stage.
  • the drill bit then drills through the float shoe 20 and through the small amount of cement remaining at the base 13.
  • FIG 3 there is shown a well bore or formation 111 cut in rock or other ambient material 112 and terminating at a base 113 of the formation.
  • a drill string indicated generally at 114 and composed of a number of drill joints of which three are shown at 115, 116 and 118.
  • the drill joints are interconnected by threaded portions 119, and the bottom drill joint is terminated by a drill head shown diagrammatically at 120.
  • the formation 111 in Figure 3 is shown at a stage at which the drill string 114 is to be removed from the bore after there has been deposited at the base 113 of the bore cementing fluid 123.
  • annular space 121 initially filled with a packing fluid 122.
  • Inside the drill string 114 has been pumped a calculated volume of cementing fluid 123 which has been forced down the drill string 114 by a displacement plug 124 driven along the drill string 114 by a displacement fluid 125 behind the plug 124.
  • the cementing fluid 123 has been forced (through apertures not shown) around the bottom of the drill head 120 and back up the annular space 121 to reach a level approximately the same as the level of cementing fluid 123 within the drill string 114.
  • a drill joint 116 Connected at or the near the bottom of the drill string 114 is a drill joint 116 embodying the present invention and including an obstruction means formed by an inner rubber lining 126 extending along most of the length of the drill joint 116. As shown in Figure 4, the lining 126 extends along almost all of the length of the joint 116, and provides an inner diameter at the lining of lesser diameter than the inner diameter of the joints forming the rest of the drill string 114.
  • the lining 126 is of generally similar material and configuration to the lining 26 shown in Figures 1 and 2. However a lower edge 132 of the lining 126 differs from that of the lining 26.
  • the lining 26 of Figure 2 has chamfered edges at its upper and lower edges.
  • An upper edge 131 of the lining 126 is again chamfered to allow relatively easy (although interrupted) passage of the plug 124, but the lower edge 132 of the lining 126 is a square shoulder for preventing return of the plug 124 back up the drill string 114.
  • the displacement plug 124 is generally similar to the plug 24 shown in Figure 1.
  • the plug 124 When the plug 124 reaches the lining 126 it experiences a momentary check or interruption to its movement along the string 114 while the pressure in the displacement fluid 125 rises sufficiently to carry the plug 124 past the lining 126.
  • the effect of the interruption of the plug movement is a pressure surge in the pumping system which is detected at the surface pumping equipment and is used as described hereinbefore to determine when the required displacement of cementing fluid has been achieved.
  • the method of the embodiment of the invention shown in Figures 3 and 4 operates in the following manner. Firstly there is deposited into the drill string 114 the quantity of cementing fluid 123 which is calculated to provide the required depth of cement at the base 113 of the bore 111. Next there is inserted in the top of the drill string 114 the displacement plug 124, and the plug is driven down the drill string 114 by'pressure of the displacement fluid 125. When the plug 124 reaches the bottom of the drill string 114, the pumping system is switched off and the drill string 114 is withdrawn from the bore 111 leaving the cementing fluid at the base 113 of the bore 111 to harden as required. After the pumping system has been shut off (during the withdrawing of the drill string), the cementing fluid is prevented from passing back up the drill string 114 by the plug 124 lodging against the shoulder at the lower edge 132 of the lining 126.
  • FIGs5a and 5b there is shown a modification of the drill joint 116 shown in Figure 4.
  • elements corresponding to elements in Figure 4 are indicated by like reference numerals.
  • the modification of the drill joint showing Figures 5a and 5b consists of the provision at the upper end of the drill joint 116 of a moulded rubber bridging element 133 in the form of a cross which extends across the drill joint 116 at the top of the rubber lining 126.
  • the purpose of the rubber cross 133 is to provide additional obstruction means for producing an interruption of the movement of the displacement plug member 124 ( Figure 3) when it reaches the drill joint 116.
  • the plug 124 is interrupted in its movement, but then breaks through the rubber cross 133 and continues its way down the drill joint 116.
  • the rubber cross 133 is conveniently arranged to be broken by a fluid displacement plug 124 when driven under a pressure of displacement fluid of about 700 p.s.i. It is to be appreciated that the modification of Figures 5a and 5b may equally well be applied with the embodiments shown in Figures 1 and 2.
  • the bridging member 133 may be used alone or in combination with other obstruction means with a drill joint or other tubular casing member.

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  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
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  • Physics & Mathematics (AREA)
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EP80300608A 1979-03-02 1980-02-28 Méthode concernant le pompage de fluide le long d'une structure tubulaire dans un trou de forage et composant tubulaire utilisable dans une telle structure Withdrawn EP0015726A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB7907409 1979-03-02
GB7907409 1979-03-02
GB7914827 1979-04-27
GB7914827 1979-04-27

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EP0015726A1 true EP0015726A1 (fr) 1980-09-17

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EP80300608A Withdrawn EP0015726A1 (fr) 1979-03-02 1980-02-28 Méthode concernant le pompage de fluide le long d'une structure tubulaire dans un trou de forage et composant tubulaire utilisable dans une telle structure

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017176254A1 (fr) * 2016-04-05 2017-10-12 Halliburton Energy Services, Inc. Produits chimiques sensibles au ph pour détection de fluide en profondeur de forage et communication avec la surface
CN107387065A (zh) * 2017-08-29 2017-11-24 西安漫垣机电设备有限公司 一种固井胶塞动态跟踪指示系统及方法
WO2022035700A1 (fr) * 2020-08-13 2022-02-17 Halliburton Energy Services, Inc. Bouchon de déplacement métallique expansible

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US1594448A (en) * 1926-02-13 1926-08-03 Boynton Alexander Method of and device for cementing wells
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GB790610A (en) * 1954-06-22 1958-02-12 Sandvikens Jernverks Ab Hollow drill steel and a method for its manufacture
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US3464493A (en) * 1967-12-26 1969-09-02 Forrest E Chancellor Port collar for well casings and method for packing well bores
US3566964A (en) * 1967-11-09 1971-03-02 James B Ringgold Mud saver for drilling rigs
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Publication number Priority date Publication date Assignee Title
US1490143A (en) * 1922-02-13 1924-04-15 Taber Fairman Wallace Method and apparatus for cementing oil wells
US1459345A (en) * 1922-07-18 1923-06-19 William J Robertson Well-cementing apparatus
US1594448A (en) * 1926-02-13 1926-08-03 Boynton Alexander Method of and device for cementing wells
US2053448A (en) * 1935-03-18 1936-09-08 Lewis T Starr Depth gauge control and lead plug
GB790610A (en) * 1954-06-22 1958-02-12 Sandvikens Jernverks Ab Hollow drill steel and a method for its manufacture
US3102595A (en) * 1960-04-25 1963-09-03 Baker Oil Tools Inc Apparatus for cementing tubing strings in well bores
US3419074A (en) * 1966-06-10 1968-12-31 Otis Eng Co Well tools
US3566964A (en) * 1967-11-09 1971-03-02 James B Ringgold Mud saver for drilling rigs
US3464493A (en) * 1967-12-26 1969-09-02 Forrest E Chancellor Port collar for well casings and method for packing well bores
US3635288A (en) * 1969-12-29 1972-01-18 Maurice P Lebcurg Liner-cementing apparatus
US4026583A (en) * 1975-04-28 1977-05-31 Hydril Company Stainless steel liner in oil well pipe

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017176254A1 (fr) * 2016-04-05 2017-10-12 Halliburton Energy Services, Inc. Produits chimiques sensibles au ph pour détection de fluide en profondeur de forage et communication avec la surface
GB2563525A (en) * 2016-04-05 2018-12-19 Halliburton Energy Services Inc PH-Sensitive chemicals for downhole fluid sensing and communication with the surface
CN109072687A (zh) * 2016-04-05 2018-12-21 哈利伯顿能源服务公司 用于井下流体感测和与地面通信的pH敏感性化学品
US10598005B2 (en) 2016-04-05 2020-03-24 Halliburton Energy Services, Inc. pH-sensitive chemicals for downhole fluid sensing and communication with the surface
AU2016401659B2 (en) * 2016-04-05 2021-05-27 Halliburton Energy Services, Inc. pH-sensitive chemicals for downhole fluid sensing and communication with the surface
CN109072687B (zh) * 2016-04-05 2021-07-13 哈利伯顿能源服务公司 用于井下流体感测和与地面通信的pH敏感性化学品
GB2563525B (en) * 2016-04-05 2021-08-11 Halliburton Energy Services Inc PH-Sensitive chemicals for downhole fluid sensing and communication with the surface
CN107387065A (zh) * 2017-08-29 2017-11-24 西安漫垣机电设备有限公司 一种固井胶塞动态跟踪指示系统及方法
WO2022035700A1 (fr) * 2020-08-13 2022-02-17 Halliburton Energy Services, Inc. Bouchon de déplacement métallique expansible
WO2022035704A1 (fr) * 2020-08-13 2022-02-17 Halliburton Energy Services, Inc. Valve comprenant un joint métallique extensible
GB2611689A (en) * 2020-08-13 2023-04-12 Halliburton Energy Services Inc Expandable metal displacement plug
GB2611688A (en) * 2020-08-13 2023-04-12 Halliburton Energy Services Inc A valve including an expandable metal seal

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