CN2486734Y - Double sand holding bucket downhole bailing tub - Google Patents

Double sand holding bucket downhole bailing tub Download PDF

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Publication number
CN2486734Y
CN2486734Y CN 01220363 CN01220363U CN2486734Y CN 2486734 Y CN2486734 Y CN 2486734Y CN 01220363 CN01220363 CN 01220363 CN 01220363 U CN01220363 U CN 01220363U CN 2486734 Y CN2486734 Y CN 2486734Y
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CN
China
Prior art keywords
sand
valve
bailing
tube
ofing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 01220363
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Chinese (zh)
Inventor
兰艾芳
吴凤林
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.)
Petrochina Co Ltd
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Petrochina Co Ltd
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Filing date
Publication date
Application filed by Petrochina Co Ltd filed Critical Petrochina Co Ltd
Priority to CN 01220363 priority Critical patent/CN2486734Y/en
Application granted granted Critical
Publication of CN2486734Y publication Critical patent/CN2486734Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to an downhole bailing device with double sand barrels used in oil well bailing operation, comprising an upper slotted screen pipe 1 and a lower slotted screen pipe 6, an upper sand barrel 2 and a lower sand barrel 12, an upper traveling valve 3 and a lower traveling valve 9, a pressure valve 4, a sealing bearing device 5, a connecting tube 7, a piston 8, a sand scraping ring 10, an upper bottom valve 11 and a lower bottom valve 13, a unidirectional sand scraping leather cup 14, and a sand pounding device 15. The bailing device has the advantages of reasonable design, reliable operation, and high efficiency of swabbing. The bailing device can be used to greatly improve the efficiency of bailing operation and the ageing of oil production, avoid the valve being stuck and to be suitable for popularization and application.

Description

Double sand holding bucket down-hole sand pumping device
The utility model relates to a kind of downhole hardware that oil well drags for the sand operation that is used for.
Along with the continuity of oil mining process, the sand grains in the oil reservoir can be carried into pit shaft by oily stream inevitably, often also forms the sand post gradually in the shaft bottom deposition when serious, stops up oil flow channel, influences the oil well ordinary production.At this problem that generally and frequently takes place of sand production, on-the-spot when actively taking various sand-preventing process measures, need often carry out sand washing or drag for the sand operation.At present, the on-the-spot down-hole sand pumping device that uses when dragging for the sand operation has only a sand-filling cylinder, it is little that it holds the sand amount, pumping efficient is lower, and the sand card failure takes place easily, thereby drag for the sand operating efficiency and job schedule is restricted, and influence the oil well ordinary production, particularly poorer for higher its applicability of serious sand output well of pit shaft sand post.
The purpose of this utility model is to provide a kind of holds that the sand amount is big, pumping efficient height, can improve the double sand holding bucket down-hole sand pumping device that drags for sand operating efficiency and oil well production timeliness greatly.
The utility model is to realize like this.This kind down-hole sand pumping device is made up of upper and lower cutting seam sieve tube, upper and lower sand-filling cylinder, the upper and lower valve that moves about, pressure reduction valve, sealing bearing apparatus, communicating pipe, piston, the ring of strike-ofing, upper and lower bottom valve, unidirectional leather cup and the rramming device of strike-ofing, its structure, assembling feature are as follows: go up sand-filling cylinder top to be connected to cutting seam sieve tube on the screw thread, the bottom has been hinged with travelling valve, pressure reduction valve, communicating pipe, piston, time travelling valve, the ring of strike-ofing successively with screw thread; The sealing bearing apparatus was sleeved on outside communicating pipe, and the two is for flexibly connecting, its down with screw thread be hinged with down cutting seam sieve tube successively, gone up bottom valve, lower sand-holiding tube, following bottom valve and rramming device, the lower sand-holiding tube bottom outside is pressed with the unidirectional leather cup of strike-ofing with pressure ring.During use, this sand pumping device is carried G.I.H with wire rope or oil pipe, sucker rod.After the rramming device of sand pumping device lower end runs into the sand face, continue to transfer piston, the weight of top such as communicating pipe, sand-filling cylinder tubing string promotes piston and continues descending, through down bottom valve, lower sand-holiding tube, go up that the up liquid of bottom valve enters piston top by travelling valve down and through communicating pipe and go up travelling valve and enter sand-filling cylinder, enter pit shaft through last cutting seam sieve tube.Carry on piston begins on earth, the above tubing string of piston is up under the dynamic action of ground, and pump barrel then is close to the sand face with lower tubular column under action of gravity.At this moment, the upper and lower valve that moves about is closed, and upper and lower bottom valve is opened, at piston, down form the vacuum pumping below the travelling valve, in the pit shaft partially liq under the fluid column differential pressure action, unidirectional leather cup and the rramming device of strike-ofing of flowing through, sand setting in the well is risen, and liquid sand enters in the sand-filling cylinder jointly.Along with the reduction of sand face in the pit shaft, bottom tubing strings such as rramming device, sand-filling cylinder continue descending under action of gravity, and the mulling liquid bottom valve that continues to flow through down enters lower sand-holiding tube, the cutting seam sieve tube discharge of flowing through down of the liquid in the annular space of piston top.When piston stroking upward when sealing the bearing apparatus position, blocked by the positioning joint on the bearing apparatus, finish a reciprocation cycle.When continuing reciprocal pumping, the mulling liquid in the lower sand-holiding tube through last bottom valve, down travelling valve, communicating pipe, go up travelling valve and enter sand-filling cylinder, sand grains is left in the sand-filling cylinder, most of liquid is discharged through last cutting seam sieve tube.When the sand post in the last sand-filling cylinder reach a certain height, last travelling valve was with final plant closure.At this moment, if continue suction, the pressure reduction valve piston top tubing string and in the sand-filling cylinder under the acting in conjunction of sand grains gravity, open by fluid power, part mulling liquid enters pit shaft through the pressure reduction valve.In addition, the metal that install this sand pumping device piston bottom ring of strike-ofing, sand card in the time of can preventing descent of piston; The unidirectional leather cup of strike-ofing of containing the tube bottom setting down can scrape the sand grains that the annular space place between sand-filling cylinder and the oil well casing wall is detained, and prevents the sand card, and can guarantee when pumping that liquid can enter bottom valve down through the leather cup annular space of strike-ofing; The sealing bearing apparatus then can be avoided entering sand grains with stuck piston in the pump barrel of top with being used of following cutting seam sieve tube, and guarantees that piston and pump barrel be not by scratch.
The utility model is reasonable in design, reliable operation, and pumping efficient height utilizes it to improve greatly and drags for sand operating efficiency and oil well production timeliness, and can avoid sand card accident, is suitable for and applies.
Accompanying drawing is general structure of the present utility model and operating principle schematic diagram.Among the figure, label " 16 " is wire rope or oil pipe, sucker rod, and " 17 " are liquid level, and " 18 " are sleeve pipe, and " 19 " are mulling liquid, and " 20 " are the pit shaft sand setting, and " 21 " are the artificial bottom of a well, and " 22 " are oil reservoir.
Below in conjunction with accompanying drawing enforcement of the present utility model is described further.
As shown in the figure, the utility model is made up of upper and lower cutting seam sieve tube 1,6, upper and lower sand-filling cylinder 2,12, the upper and lower valve 3,9 that moves about, pressure reduction valve 4, sealing bearing apparatus 5, communicating pipe 7, piston 8, the ring 10 of strike-ofing, upper and lower bottom valve 11,13, unidirectional leather cup 14 and the rramming device 15 of strike-ofing.Wherein, upper and lower sand-filling cylinder 2,12 is upper and lower end and is respectively equipped with screw thread and bottom center and is provided with the cylinder of double as ball seat with circular hole.Upper and lower cutting seam sieve tube 1,6 is the pipe that uniform numerous longitudinal slots and upper and lower end are respectively equipped with screw thread on perisporium.Piston 8 is a hollow circular cylinder.Unidirectional leather cup 14 materials of strike-ofing are rubber, and hollow is the bowl-shape of back-off.Rramming device 15 is that a upper end is threaded, the short tube of lower end indentation.

Claims (1)

1, a kind of double sand holding bucket down-hole sand pumping device, by last, following cutting seam sieve tube (1), (6), on, lower sand-holiding tube (2), (12), pressure reduction valve (4), sealing bearing apparatus (5), communicating pipe (7), piston (8), on, following travelling valve (3), (9), the ring (10) of strike-ofing, on, following bottom valve (11), (13), the unidirectional leather cup of strike-ofing (14), rramming device (15) is formed, it is characterized in that: go up sand-filling cylinder (2) top and go up cutting seam sieve tube (1) to be threaded, the bottom has been hinged with travelling valve (3) successively with screw thread, pressure reduction valve (4), communicating pipe (7), piston (8), following travelling valve (9), the ring (10) of strike-ofing; Sealing bearing apparatus (5) is sleeved on communicating pipe outside (7), the two is for flexibly connecting, its down with screw thread be hinged with down cutting seam sieve tube (6) successively, gone up bottom valve (11), lower sand-holiding tube (12), bottom valve (13) and rramming device (15) down, an individual side is pressed with the unidirectional leather cup of strike-ofing (14) with pressure ring outside lower sand-holiding tube (12) bottom.
CN 01220363 2001-04-29 2001-04-29 Double sand holding bucket downhole bailing tub Expired - Lifetime CN2486734Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01220363 CN2486734Y (en) 2001-04-29 2001-04-29 Double sand holding bucket downhole bailing tub

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 01220363 CN2486734Y (en) 2001-04-29 2001-04-29 Double sand holding bucket downhole bailing tub

Publications (1)

Publication Number Publication Date
CN2486734Y true CN2486734Y (en) 2002-04-17

Family

ID=33637979

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 01220363 Expired - Lifetime CN2486734Y (en) 2001-04-29 2001-04-29 Double sand holding bucket downhole bailing tub

Country Status (1)

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CN (1) CN2486734Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102817585A (en) * 2011-09-30 2012-12-12 南通新诚电子有限公司 Double-pipe circulating sand bailing device
CN106437584A (en) * 2016-10-28 2017-02-22 西南石油大学 Negative-pressure-type continuous sand-bailing device
CN108729888A (en) * 2018-05-02 2018-11-02 淮安市井神钻采机具有限公司 Self-priming sinks sand control screen
CN111364926A (en) * 2018-12-25 2020-07-03 中国石油天然气股份有限公司 Coal slime cleaning device
CN112343531A (en) * 2020-11-04 2021-02-09 张新 Sand-blocking-prevention safety joint for downhole operation of oil exploitation and operation method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102817585A (en) * 2011-09-30 2012-12-12 南通新诚电子有限公司 Double-pipe circulating sand bailing device
CN106437584A (en) * 2016-10-28 2017-02-22 西南石油大学 Negative-pressure-type continuous sand-bailing device
CN108729888A (en) * 2018-05-02 2018-11-02 淮安市井神钻采机具有限公司 Self-priming sinks sand control screen
CN108729888B (en) * 2018-05-02 2021-01-29 淮安市井神钻采机具有限公司 Self-suction sand-proof screen pipe
CN111364926A (en) * 2018-12-25 2020-07-03 中国石油天然气股份有限公司 Coal slime cleaning device
CN112343531A (en) * 2020-11-04 2021-02-09 张新 Sand-blocking-prevention safety joint for downhole operation of oil exploitation and operation method
CN112343531B (en) * 2020-11-04 2022-04-08 张新 Sand-blocking-prevention safety joint for downhole operation of oil exploitation and operation method

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20110429

Granted publication date: 20020417