EP0083961A2 - Schlagschieber für Bohrgestänge - Google Patents

Schlagschieber für Bohrgestänge Download PDF

Info

Publication number
EP0083961A2
EP0083961A2 EP83300016A EP83300016A EP0083961A2 EP 0083961 A2 EP0083961 A2 EP 0083961A2 EP 83300016 A EP83300016 A EP 83300016A EP 83300016 A EP83300016 A EP 83300016A EP 0083961 A2 EP0083961 A2 EP 0083961A2
Authority
EP
European Patent Office
Prior art keywords
section
mandrell
housing
piston assembly
piston
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.)
Ceased
Application number
EP83300016A
Other languages
English (en)
French (fr)
Other versions
EP0083961A3 (de
Inventor
Curtis Phillip Ring
Wayne R. Tomm
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.)
Bralorne Resources Ltd
Original Assignee
Bralorne Resources Ltd
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 Bralorne Resources Ltd filed Critical Bralorne Resources Ltd
Publication of EP0083961A2 publication Critical patent/EP0083961A2/de
Publication of EP0083961A3 publication Critical patent/EP0083961A3/de
Ceased legal-status Critical Current

Links

Images

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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
    • E21B31/113—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars hydraulically-operated

Definitions

  • Jar tools are extensively used in the oil drilling industry to dislodge drill bits, drill string sections, or other well tools trapped in well bores.
  • An example of such a jar tool is disclosed in U.S. Patent 3,716,109 (Griffiths) entitled ROTARY JAR and owned by the applicant.
  • U.S. Patent 3,716,109 discloses a jar tool which has been in satisfactory use for a number of years.
  • U.S. Patent 3,716,109 discloses a jar tool having a spline mandrell and an outer housing, the mandrell and the housing being able to move longitudinally relative to each other.
  • a knocker is connected to the mandrell and it collides with an anvil which is connected to the housing. The collision or impact between them causes the jar on the drill string and it should be appreciated that the impact is violent and the operating conditions under which the tool is used are extreme.
  • This impact is created by the sudden release of entrapped hydraulic fluid which is allowed to rush by a piston assembly travelling from a relatively narrow diameter of a hydraulic cylinder into a relatively larger diameter where the fluid flow past the piston is largely unimpeded.
  • a piston actuator To actuate the piston assembly; a piston actuator is used.
  • This piston actuator includes resilient fingers extending from the actuator and towards the piston. The fingers engage a resilient part on the piston assembly when contact is made and provide a "pulling" action on the piston assembly to return it to its home position following the jar.
  • the technique of using these fingers and the necessary costs entailed in using them and complementary parts on the piston assembly is expensive and complicated.
  • the use of the metering system required fluids that, although having viscosity characteristics more constant under different operating temperatures, did not have desirable lubricating qualities.
  • the metering system could be improved by selecting temperature compensable valves within the metering system and pressure relief valves.
  • the metering and pressure relief valves may be used in various combinations to achieve desirable operating characteristics.
  • the invention provides a jar tool for use in a drill string, said jar tool comprising:
  • the jar tool 100 comprises a spline mandrell shown generally at 101 and an outer housing shown generally at 102.
  • Spline mandrell 101 comprises a threaded socket 103 adapted to receive an adjacent piece of drill pipe (not shown) within the head portion 104 of the spline mandrell 101.
  • Hexagonal splines 105 extend longitudinally along spline mandrell 101 to threaded portion 106.
  • a knocker 107 is connected to the threaded portion 106.
  • An impact ring 108 is mounted between knocker 107 and a shoulder 109 on the spline mandrell 101.
  • Knocker 107 has an opposed threaded end 110.
  • a piston mandrell 111 is threadedly connected to knocker 107 at threaded end 110.
  • Knocker 107 also includes O-rings 112, which act as seals between knocker 107, spline mandrell 101 and piston mandrell 111.
  • a washpipe 113 is mounted to piston mandrell 111 on threaded connection 114.
  • the washpipe 113 extends longitudinally from the end of piston mandrell 111 and terminates at end 115.
  • a piston actuator 116 (see also Figure 2) is connected to washpipe 113 by a threaded connection 117.
  • 0-ring 118 provides a seal between piston mandrell 111 and washpipe 113.
  • the outer housing 102 comprises a sealing housing l19 extending from head portion 104 of spline mandrell 101 to a threaded connection 120.
  • Polypak 121 in sealing housing 119 acts as a seal between sealing housing 119 and head portion 104 of spline mandrell 101.
  • a bearing bushing 122 is provided in the sealing housing 119 as well as a cylinder fill plug 123. The fill plug 123 is used for adding hydraulic fluid to the jar tool 100.
  • a spline housing 124 has threads complementary to those at threaded connection 120 to join with sealing housing 119 and further threads 125 located at its opposed end.
  • a knocker housing 126 is connected to spline housing 124 by threads 125.
  • spline housing 124 It extends longitudinally from spline housing 124 to threaded connection 127.
  • 0-rings 128 at opposed ends of spline housing 124 act between sealing housing 119 and knocker housing 126, respectively.
  • a cylinder fill plug 129 in knocker housing 126 acts as a port for adding hydraulic fluid to the upper chamber 130 in the jar tool 100.
  • a packing sub 131 is connected to knocker housing 126 at threaded connection 127.
  • Packing sub 131 has an opposed threaded connection 132 where it is attached to hydraulic cylinder 133.
  • O-rings 134 at opposite ends of packing sub 131 act as seals between the packing sub 131, knocker housing 126 and hydraulic cylinder 133, respectively.
  • Packing sub 131 has an internally formed shoulder 134 and an inner diameter which changes from a maximum area at 135 to a minimum area at 136. Packing sub 131 also includes a further threaded connection 137 where it is connected to an upper gland nut 138.
  • Hydraulic cylinder 133 extends from the packing sub 131 to a threaded connection 139 and includes two cylinder fill plugs 129 in its periphery.
  • the inside of hydraulic cylinder 133 is formed into three main areas having diameters 140, 141 and 142 with a transition portion 146 existing between diameters 140 and 141.
  • a shoulder 147 is formed on hydraulic cylinder 133 between the areas having diameters 141 and 142.
  • a washpipe housing 148 is connected to hydraulic cylinder 133 at threaded connection 139. It extends longitudinally to threaded connection 149.
  • An O-ring 150 acts as a seal between hydraulic cylinder 133 and washpipe housing 148.
  • a knocker gland 156 is mounted between the knocker 107 and packing sub 131 in upper chamber 130.
  • Knocker gland 156 contains four polypak rings 157 which act as seals between the knocker gland 156, knocker housing 126 and piston mandrell lll, respectively.
  • O-ring gland 158 is seated against shoulder 159 of packing sub 131.
  • O-ring gland 158 includes four O-rings and back up rings 160 which act between the packing sub 131 and piston mandrell lll.
  • a female junk ring 166 abuts O-ring gland 158 and V-rings 167 are inserted between female junk ring 166 and male junk ring 168.
  • a packing spring 169 is inserted between male junk ring 168 and upper gland nut 138.
  • Upper gland nut 138 is threadedly connected to packing sub 131 at threaded connection 137 as described. It includes a wiper ring 170 acting between the upper gland nut 138 and the piston mandrell lll.
  • a second female junk ring 176 is positioned together with V-rings 177 and male junk ring 178 on shoulder 134 of packing sub 131 in the area 136 betweeen the packing sub 131 and piston mandrell 111.
  • One end of a piston return spring 179 abuts male junk ring 178 and the other end of piston return spring 179 is in contact with a piston assembly 180.
  • Piston assembly 180 (see also Figure 2) abuts shoulder 147 of hydraulic cylinder 133 in its rest position and is shown more clearly in Figures 2 and 3 in positions displaced from its rest position. There are close tolerances between piston assembly 180, the diameter of the piston mandrell 111 and hydraulic cylinder 133.
  • the piston assembly 180 includes a piston cup 181 and a metering valve 182 which is removable from the piston assembly 180. Metering valve 182 may be replaced with other suitable valves depending on the operating conditions under which the jar is used. Metering valves manufactured by the Lee Company, Arlington, Texas, are particularly appropriate for these applications.
  • a filter cage 186 ( Figure 2) is installed within the piston assembly 180 to remove contaminants in the hydraulic oil prior to passing through the metering and/or valve system.
  • Piston return spring 179 acts to retain piston assembly 180 against shoulder 147 and also acts to retain the V-rings 177, male junk ,ring 178 and female junk ring 176 ( Figure 1) in the position depicted.
  • An 0-ring gland 187 is inserted between washpipe housing 148 and washpipe 113.
  • the 0-ring gland 187 contains four O-rings and back up rings 188 which act as seals between the O-ring gland 187, washpipe housing 148 and washpipe 113, respectively.
  • a gland nut 189 is connected to washpipe housing 148 by a threaded connection 190.
  • a retaining ring 196 retains the gland nut 189 in the position depicted.
  • the piston assembly 180 is provided with a metering valve 182 as well as a pressure relief valve 197 which is inserted in the piston assembly 180 in a configuration parallel to that of the metering valve 182.
  • piston assembly 180 is shown in which a second alternative embodiment of the invention is described.
  • the piston assembly 180 is provided with a metering valve 182 and a pressure relief valve 197 in series on one side of the piston assembly 180 and a pressure relief valve 198 only is provided on the opposite side.
  • piston assembly 180 is shown in which a third alternative embodiment of the invention is described.
  • the piston assembly 180 is provided with a pressure relief valve 197 and a metering valve 182 only.
  • piston assembly 180 is shown in which a fourth alternative embodiment of the invention is described.
  • the piston assembly 180 is provided with a pressure relief valve 197 only.
  • Hydraulic cylinder 133 contains hydraulic fluid 201 and the oil cannot pass from the area at diameter 141 of hydraulic cylinder 133 to area 142 without passing through metering valve 182. Accordingly, the relatively slow passage of hydraulic fluid 201 through metering valve 182 restricts the speed at which the spline mandrell 101 and outer housing 102 can move relative to each other until the piston assembly 180 reaches the position shown in Figure 2. This builds up fluid pressure within the area 140 which creates a large potential tensile force between the two ends of the jar tool 100.
  • Piston assembly 180 under the influence of piston return spring 179, will closely follow in contact with piston actuator 116 until it returns to its rest position against shoulder 147 of hydraulic cylinder 133. Thereafter, the piston actuator will continue to move until it returns to its rest position depicted in Figure 1 before a further jar is initiated.
  • a metering valve 182 is placed in parallel position with a pressure relief valve 197.
  • the relief valve 197 will allow the hydraulic fluid to release at a certain pressure such that the maximum pull on the jar tool 100 can be limited.
  • a pressure relief valve 198 is placed in parallel with a combination of a pressure relief valve 197 and a metering valve 182. In this configuration, the minimum as well as the maximum pull can be controlled. The low pressure valve 197 will not open until a minimum pressure is reached and, thereafter, pressure relief valve 198 will limit the maximum pressure.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
EP83300016A 1982-01-06 1983-01-05 Schlagschieber für Bohrgestänge Ceased EP0083961A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA393583 1982-01-06
CA000393583A CA1177058A (en) 1982-01-06 1982-01-06 Jar tool

Publications (2)

Publication Number Publication Date
EP0083961A2 true EP0083961A2 (de) 1983-07-20
EP0083961A3 EP0083961A3 (de) 1984-07-25

Family

ID=4121751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83300016A Ceased EP0083961A3 (de) 1982-01-06 1983-01-05 Schlagschieber für Bohrgestänge

Country Status (2)

Country Link
EP (1) EP0083961A3 (de)
CA (1) CA1177058A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340154A (en) * 1998-07-09 2000-02-16 Mark Buyers Self resetting impact device
GB2362904A (en) * 2000-05-12 2001-12-05 Bd Kendle Engineering Ltd Improved jar mechanism
US7299872B2 (en) 2001-11-27 2007-11-27 Weatherford/Lamb, Inc. Hydraulic-mechanical jar tool
CN109441387A (zh) * 2018-12-20 2019-03-08 宁夏万殷机械制造科技有限公司 一种井口闪断顿击装置
CN113338832A (zh) * 2021-05-18 2021-09-03 四川伟创石油装备制造有限公司 一种液压双向震击器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228507A (en) * 1991-08-23 1993-07-20 Marcel Obrejanu Wireline hydraulic retrieving tool

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981336A (en) * 1956-10-10 1961-04-25 Johnston Testers Inc Jar
US3209843A (en) * 1962-09-11 1965-10-05 Houston Engineers Inc Hydraulic jarring tool with relief valve
US3399741A (en) * 1967-02-24 1968-09-03 Schlumberger Technology Corp Well jar
US3405773A (en) * 1966-08-05 1968-10-15 Wayne N. Sutliff Sleeve valve and oil well tool embodying the same
US3716109A (en) * 1971-02-22 1973-02-13 Jarco Services Ltd Rotary jar
CA931136A (en) * 1971-07-08 1973-07-31 Mason Leonard Jarring and bumping tool for use in oilfield drilling strings
US4076086A (en) * 1977-01-06 1978-02-28 Baker International Corporation Fishing jar for accommodation of excess tensile load
GB2043133A (en) * 1979-02-20 1980-10-01 Opi Ltd Hydraulic drill string jar
US4261427A (en) * 1979-10-15 1981-04-14 Sutliff Wayne N Long stroke jar bumper sub with safety sleeve

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981336A (en) * 1956-10-10 1961-04-25 Johnston Testers Inc Jar
US3209843A (en) * 1962-09-11 1965-10-05 Houston Engineers Inc Hydraulic jarring tool with relief valve
US3405773A (en) * 1966-08-05 1968-10-15 Wayne N. Sutliff Sleeve valve and oil well tool embodying the same
US3399741A (en) * 1967-02-24 1968-09-03 Schlumberger Technology Corp Well jar
US3716109A (en) * 1971-02-22 1973-02-13 Jarco Services Ltd Rotary jar
CA931136A (en) * 1971-07-08 1973-07-31 Mason Leonard Jarring and bumping tool for use in oilfield drilling strings
US4076086A (en) * 1977-01-06 1978-02-28 Baker International Corporation Fishing jar for accommodation of excess tensile load
GB2043133A (en) * 1979-02-20 1980-10-01 Opi Ltd Hydraulic drill string jar
US4261427A (en) * 1979-10-15 1981-04-14 Sutliff Wayne N Long stroke jar bumper sub with safety sleeve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340154A (en) * 1998-07-09 2000-02-16 Mark Buyers Self resetting impact device
GB2340154B (en) * 1998-07-09 2003-03-19 Mark Buyers Self-resetting impact device
GB2362904A (en) * 2000-05-12 2001-12-05 Bd Kendle Engineering Ltd Improved jar mechanism
GB2362904B (en) * 2000-05-12 2004-08-11 Bd Kendle Engineering Ltd Improved jar mechanism
US7299872B2 (en) 2001-11-27 2007-11-27 Weatherford/Lamb, Inc. Hydraulic-mechanical jar tool
CN109441387A (zh) * 2018-12-20 2019-03-08 宁夏万殷机械制造科技有限公司 一种井口闪断顿击装置
CN113338832A (zh) * 2021-05-18 2021-09-03 四川伟创石油装备制造有限公司 一种液压双向震击器
CN113338832B (zh) * 2021-05-18 2023-10-20 四川伟创石油装备制造有限公司 一种液压双向震击器

Also Published As

Publication number Publication date
EP0083961A3 (de) 1984-07-25
CA1177058A (en) 1984-10-30

Similar Documents

Publication Publication Date Title
EP0456305B1 (de) Hydraulische Rutschschere
US4364407A (en) Mud saver valve
US8230912B1 (en) Hydraulic bidirectional jar
US4333542A (en) Downhole fishing jar mechanism
US4834183A (en) Surface controlled subsurface safety valve
US4865125A (en) Hydraulic jar mechanism
US9103186B2 (en) Sealed jar
US6202767B1 (en) Double acting hydraulic jar
US4478284A (en) Jar tool
CA1114360A (en) Temperature compensating hydraulic jarring tool
US7093654B2 (en) Downhole component with a pressure equalization passageway
EP1238182B1 (de) Volumenstrom-betätigtes ventil
US3566981A (en) Hydraulic drilling jar
EP0083961A2 (de) Schlagschieber für Bohrgestänge
AU716162B2 (en) Metal-to-metal sliding side door for wells
US11702898B2 (en) Adjustable hydraulic jarring device
CA2302977C (en) Hydraulic drilling jar
CA3191890A1 (en) Bit saver assembly and method
US5228516A (en) Tester valve
GB2101178A (en) Control valve
US4586569A (en) Retrievable fluid control valve
WO2003010412A2 (en) Sand control seal for subsurface safety valve
AU2002320274A1 (en) Sand control seal for subsurface safety valve
US4105082A (en) Jarring tool
US11613966B2 (en) Mechanical drain for oilfield service

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE DE FR GB NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE DE FR GB NL SE

17P Request for examination filed

Effective date: 19841219

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19870125

RIN1 Information on inventor provided before grant (corrected)

Inventor name: RING, CURTIS PHILLIP

Inventor name: TOMM, WAYNE R.