CN101575955A - Design method of low-pressure gas well swabbing damper - Google Patents
Design method of low-pressure gas well swabbing damper Download PDFInfo
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- CN101575955A CN101575955A CN 200910136837 CN200910136837A CN101575955A CN 101575955 A CN101575955 A CN 101575955A CN 200910136837 CN200910136837 CN 200910136837 CN 200910136837 A CN200910136837 A CN 200910136837A CN 101575955 A CN101575955 A CN 101575955A
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Abstract
The invention belongs to the field of oil and gas development, relating to a design method of a device for carrying out swabbing and liquor drainage in a swabbing technology of a low-pressure oil and gas well. The swabbing technology can reduce the back pressure of liquid in the well on oil or gas, break the balance of liquid gas pressure in the well, and then induce and spray gas or oil out of the well; definitely, the invention is the design method in a low-pressure gas well swabbing damper, and uses the interaction of liquid flow resistance in the well and self weight of swabbing tools to facilitate a job slip in the damper to extend out and clamp at the internal wall of an oil pipe to play the role of damping, so as to achieve the requirement of not spraying a swab out of the well. The damper is connected between a swabbing wire cable and a weight bar used for swabbing, can not only solve the problem that the swab is sprayed out of the well while gas liquid in the well is sprayed in the process of the swabbing of the oil and gas well, but also solve the problems that the gas liquid twists the wire cable in the well or even is clamped in the oil pipe while being sprayed so as to cause the accident of clamping the swab in the process of the swabbing of the oil and gas well.
Description
Technical field
The invention belongs to the method for designing of carrying out pumping discharge opeing instrument in the pumping technology of low pressure oil gas well in natural petroleum gas field field, this pumping technology can reduce the back pressure of the interior liquid of well to oil or natural gas, break liquid gas pressure equilibrium of forces in the well, and then natural gas or oily induced flow gone out outside the well, exactly be a kind of method for designing of low-pressure gas well swabbing damper.
Background technology
For " three is low " oil gas field, i.e. the oil gas field of low pressure, hypotonic, low yield behind every mouthful of well construction, all must carry out discharge opeing basically, and the technology that discharge opeing is adopted also the overwhelming majority be the pumping technology; No matter be to the pumping of gas well or to the pumping of oil well, all run into swab in the pumping process and sprayed the outer situation of well automatically, for the scene of oil gas, initiation fire easily, injure personnel, equipment and environment pollution, this is the maximum potential safety hazard of swabbing operation.Because of this problem can't resolve, on gas well, do not allow to carry out the pumping discharge opeing, and that the pumping discharge opeing is a cost is minimum, efficiency of construction is higher, a kind of method of on-the-spot discharge opeing the most in time.
In the face of such state of arts, just require in the pumping process, a damper is installed on the instrument that pumping is used, can when the oil gas blowout goes out, it can be stuck in the oil pipe, but it can put forward again in the process that wire rope is upwards carried; Its G.I.H smoothly in the process that swab is transferred.Take out in being lowered to liquid level smoothly from requiring, require in the well gas-liquid of ejection this instrument can be stuck on the oil pipe again and analyze, the performance of its requirement is conflicting instrument, so this problem is difficult to solve.For a long time, this problem is the maximum potential safety hazard of swabbing operation always.
Summary of the invention
One of purpose of the present invention is: solve in the oil gas well pumping process, when the interior gas-liquid of well sprays swab is sprayed the outer problem of well.
Two of purpose of the present invention is: solve in the oil gas well pumping process, during the gas-liquid ejection wire rope in the well is given a discount even be stuck in the oil pipe accident problem of card swab when causing pumping.
Technical scheme of the present invention is: the method for designing that a kind of low-pressure gas well swabbing damper is provided, it is characterized in that: damper is connected the pumping wire rope and carries out pumping with swab G.I.H liquid level between the weighted lever that pumping is used, the interaction that utilizes liquid flowing resistance and pumping instrument in the well to conduct oneself with dignity is stretched out on the inwall that is stuck in oil pipe the work slips of damper and is played damping action; Be pumping instrument when going into well with damper, under the action of gravity of weighted lever, the slips cone push rod is left with slip insert and is not contacted; In the last normal processes of carrying swab, in case when well is taken out spray, the gas-liquid of bottom can head on swab and move upward, the swab upward speed is during greater than the speed of wire rope proper motion, then the slips cone push rod is upwards released slip insert, slip insert is acted on as tong key on the inwall of oil pipe, oil gas is offseted the strength that swab upwards pushes away; When wire rope stops, flow under the effect of top power at the wire rope gravity and the liquid that makes progress, damper can be stuck in the oil pipe, and maximum can keep the pressure reduction of 5MPa, and swab can not spray in well; After swab runs into liquid level, slips blocks under the unexpected effect of liquid level automatically, therefore, require to connect a weighted lever below the swab damper, after running into liquid level and blocking, mention wire rope on again, under the effect of wire rope and weighted lever, the duty of slips is removed, and swab carries out pumping among continuing to be lowered to liquid level lentamente.
The damper joint of described low-pressure gas well swabbing damper is fixedlyed connected with the slips shelf; Slip insert is in the groove of slips shelf, and the slips bottom shelf is fixedly connected with the slips base; Connecting rod passes the slips base fixedlys connected with the slips cone push rod by connector; The connecting rod lower end is connected with down weighted lever, is with back-moving spring on the slips shelf between slip insert and the slips base.
The upper end of described damper joint is connected with weighted lever, and last weighted lever upper end is connected with wire rope by the wire rope rope socket, and following weighted lever lower end and swab flexibly connect.
Described damper weight is selected 3-5kg, and weighted lever weight is selected 200kg-500kg, and weighted lever is that lead material is made, and the diameter of weighted lever is chosen in 20-40mm.
Characteristics of the present invention are: it utilizes the interaction of interior liquid flowing resistance of well and the deadweight of pumping instrument, can carry out pumping with swab G.I.H liquid level at damper, damper weight is selected 3-5kg, weighted lever weight is selected 200kg-500kg, weighted lever is that lead material is made, the diameter of weighted lever is chosen in 20-40mm, when the speed uplink of swab during greater than the upward strain speed of wire rope, can play damping action; On carry in the process, if run into when pushing up on the oil gas liquid, wire rope stops, then swab also will stop; When wire rope was carried on again, swab can normally be carried.That is to say that swab can only haul in well with wire rope and move up and down, oil gas liquid can not push away swab and move.It carries out the pumping discharge opeing to the liquid in the well like this, reduces the back pressure of the interior liquid of well to oil or natural gas, breaks liquid gas pressure equilibrium of forces in the well, and then natural gas or oily induced flow are gone out outside the well, reaches the purpose of oil recovery or gas production.Also solved simultaneously the problem that swab sprays automatically in the pumping process.
Low-pressure gas well swabbing damper is when the oil well well-flushing, and the form of simulation blowout checks whether it can play damping action.Basically reached the performance of designing requirement through overtesting: when the discharge capacity of using the well-flushing pump with 800L/min recoiled, the swab spray was not come out, but can propose swab; At this moment, the pressure reduction that forms between damper and the swab reaches 5MPa.And then on gas well, carried out relevant test, to the anti-wear performance of its slips, unfailing performance has been done corresponding test, and pumping San Koujing all reached designing requirement.
Description of drawings
The present invention will be further described below in conjunction with the embodiment accompanying drawing.
Fig. 1 is the example structure schematic diagram.
Among the figure: 1, back-moving spring; 2, rope socket; 3, go up weighted lever; 4, damper joint; 5, slips shelf; 6, slips cone push rod; 7, connector; 8, connecting rod; 9, following weighted lever; 10, swab; 11, slips base; 12, slip insert.
The specific embodiment
Embodiment as shown in Figure 1, the pumping wire rope is fixedlyed connected with last weighted lever 3 by wire rope rope socket 2, last weighted lever 3 passes through damper joint 4 fixedlys connected with slips shelf 5; One end of following weighted lever 9 and swab 10 flexibly connect, and the other end is fixedlyed connected with connecting rod 8; Connecting rod 8 passes slips base 11 fixedlys connected with slips cone push rod 6 by connector 7; Slips base 11 is fixedlyed connected with slips shelf 5 again; Slip insert 12 is in the groove of slips shelf 5.On the slips shelf 5 between slip insert 12 and the slips base 11, be with back-moving spring 1.
Because damper is connected on the rope socket 2 of wire rope bottom, connect the swab damper again during use, the damper bottom connects weighted lever 9 down, and following weighted lever 9 bottoms connect swab 10.Under the normal condition, under the action of gravity of weighted lever, slips cone push rod 6 is left with slip insert 12, does not contact, as in being lowered to the process of liquid level.In the last normal processes of carrying swab 10, in case when well taken out spray, the gas-liquid of bottom can head on swab 10 and move upward; When swab 10 upward speed during greater than the speed of wire rope proper motion, then slips cone push rod 6 is upwards released slip insert 12, makes slip insert 12 as tong key, acts on the inwall of oil pipe, offsets pushing away the strength that swab 10 makes progress on the oil gas; In case wire rope stops, then under the effect of the wire rope gravity and the top power that makes progress, damper can be stuck in the oil pipe, and maximum can keep the pressure reduction of 5MPa, and swab 10 can not spray in well.In order to solve swab 10 in being lowered to the process of liquid level, after swab runs into liquid level, slip insert 12 blocks under the unexpected effect of liquid level automatically, therefore require to connect a following weighted lever 9 below the swab damper, after running into liquid level and blocking, mention wire rope on can be again, under the effect of wire rope and weighted lever, the duty of slip insert 12 is removed, and swab 10 carries out pumping among can continuing to be lowered to lentamente liquid level.Present embodiment damper weight 4kg, lead material weighted lever weight is 400kg, the diameter of weighted lever is 30mm.
The operating principle of present embodiment is to utilize the interaction of liquid flowing resistance and the deadweight of pumping instrument in the well, and the work slips of damper is stretched out, and is stuck on the inwall of oil pipe and plays damping action, reaches and swab is not sprayed well requirement outward.Damper is to be connected between the weighted lever that pumping wire rope and pumping use, the pumping instrument is gone in the process of well with damper, the general damping amount of thinking highly of is selected 3-5kg, weighted lever weight is selected 200kg-500kg, material such as lead that the material selection proportion of weighted lever is bigger, the diameter of weighted lever generally is selected at 20-40mm, make the gravity of weighted lever require to be slightly larger than the effect of liquid flowing resistance, under the action of gravity of weighted lever, slips cone push rod 6 is left with slip insert 12 and is not contacted, as in being lowered to the process of liquid level.In the last normal processes of carrying swab, in case when well taken out spray, the gas-liquid of bottom can head on swab 10 and move upward; When swab 10 upward speed during greater than the speed of wire rope proper motion, then slips cone push rod 6 is upwards released slip insert 12, makes slip insert 12 as tong key, acts on the inwall of oil pipe, and oil gas is offseted the strength that swab 10 upwards pushes away; In case wire rope stops, then wire rope gravity and liquid stream top power upwards effect under, damper can be stuck in the oil pipe, maximum can keep the pressure reduction of 5MPa, swab 10 can not spray in well.
In order to solve swab 10 in being lowered to the process of liquid level, after swab 10 runs into liquid level, slips blocks under the unexpected effect of liquid level automatically, therefore, requires must connect a weighted lever below the swab damper, after running into liquid level and blocking, mention wire rope on can be again, under the effect of wire rope and weighted lever, the duty of slips is removed, swab can continue to be lowered to lentamente among the liquid level, carries out pumping.
The technological requirement damper is connected between wire rope and the pumping instrument, can carry out pumping with swab G.I.H liquid level; When the speed uplink of swab during, can play damping action greater than the upward strain speed of wire rope; On carry in the process, if run into when pushing up on the oil gas liquid, wire rope stops, then swab also will stop; When wire rope was carried on again, swab can normally be carried.That is to say, swab can only haul in well with wire rope and move up and down, gas-liquid can not upwards push away swab and move from the bottom, to solve in the oil gas well pumping process, when gas-liquid sprays in the well, when swab is sprayed outer problem of well and gas-liquid ejection, wire rope in the well is given a discount, even be stuck in the problem that causes pumping card swab accident in the oil pipe.
When entering liquid level, pushes up in the throttle resistance swab, slip insert 12 is stretched out when being stuck on the tube inner wall, on carry wire rope and remove duty by damper, utilize the gravity of weighted lever to be slightly larger than the effect of liquid flowing resistance again, slowly below the liquid level with the swab G.I.H, carry out pumping.
Claims (4)
1, the method for designing of low-pressure gas well swabbing damper, it is characterized in that: damper is connected the pumping wire rope and carries out pumping with swab (10) G.I.H liquid level between the weighted lever that pumping is used, utilize the interaction of interior liquid flowing resistance of well and the deadweight of pumping instrument, the work slips of damper is stretched out, be stuck on the inwall of oil pipe and play damping action; Be that the pumping instrument is gone in the process of well with damper, under the action of gravity of weighted lever, slips cone push rod (6) is left with slip insert (12) and is not contacted; In the last normal processes of carrying swab (10), in case when well taken out spray, the gas-liquid of bottom can head on swab (10) and move upward; Swab (10) upward speed is during greater than the speed of wire rope proper motion, then slips cone push rod (6) is upwards released slip insert (12), slip insert (12) is acted on as tong key on the inwall of oil pipe, oil gas is offseted the strength that swab upwards pushes away; Wire rope stops, and then flows under the effect of top power at the wire rope gravity and the liquid that makes progress, and damper is stuck in the oil pipe, and maximum can keep the pressure reduction of 5MPa, and swab (10) can not spray in well; After swab (10) runs into liquid level, slips blocks under the unexpected effect of liquid level automatically, therefore, require to connect a weighted lever below the swab damper, after running into liquid level and blocking, carry wire rope on again, under the effect of wire rope and weighted lever, the duty of slips is removed, and swab (10) carries out pumping among continuing to be lowered to liquid level lentamente.
2, according to the low-pressure gas well swabbing damper of this method design, it is characterized in that: damper joint (4) is fixedlyed connected with slips shelf (5); Slip insert (12) is in the groove of slips shelf (5), and slips shelf (5) bottom is fixedly connected with slips base (11); Connecting rod (8) passes slips base (11) fixedlys connected with slips cone push rod (6) by connector (7); Connecting rod (8) lower end is connected with down weighted lever (9), is with back-moving spring (1) on the slips shelf (5) between slip insert (12) and the slips base (11).
3, low-pressure gas well swabbing damper according to claim 2, it is characterized in that: the upper end of described damper joint (4) is connected with weighted lever (3), last weighted lever (3) upper end is connected with wire rope by wire rope rope socket (2), and following weighted lever (9) lower end and swab (10) flexibly connect.
4, low-pressure gas well swabbing damper according to claim 2 is characterized in that: described damper weight is selected 3-5kg, and weighted lever weight is selected 200kg-500kg, and weighted lever is the weighted lever that lead material is made, and the weighted lever diameter is chosen in 20-40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910136837 CN101575955B (en) | 2009-02-27 | 2009-04-17 | Design method of low-pressure gas well swabbing damper |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920032021.6 | 2009-02-27 | ||
| CN200920032021 | 2009-02-27 | ||
| CN 200910136837 CN101575955B (en) | 2009-02-27 | 2009-04-17 | Design method of low-pressure gas well swabbing damper |
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| Publication Number | Publication Date |
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| CN101575955A true CN101575955A (en) | 2009-11-11 |
| CN101575955B CN101575955B (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910136837 Expired - Fee Related CN101575955B (en) | 2009-02-27 | 2009-04-17 | Design method of low-pressure gas well swabbing damper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899961A (en) * | 2010-08-17 | 2010-12-01 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Controllable friction type anti-spraying plug inside pipeline and anti-spraying method |
| CN102733787A (en) * | 2012-07-12 | 2012-10-17 | 中国海洋石油总公司 | Plug-in coiled tubing induced-spraying device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2596002Y (en) * | 2003-01-28 | 2003-12-31 | 沈阳大华石油设备有限公司 | Casing pipe sucker |
| CN101250997A (en) * | 2007-12-17 | 2008-08-27 | 长庆石油勘探局 | Anti-stop pullker |
| CN201133240Y (en) * | 2007-12-17 | 2008-10-15 | 长庆石油勘探局 | Deep well block-proof swab |
| CN201401150Y (en) * | 2009-04-17 | 2010-02-10 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Swabbing damper of low-pressure gas well |
-
2009
- 2009-04-17 CN CN 200910136837 patent/CN101575955B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899961A (en) * | 2010-08-17 | 2010-12-01 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Controllable friction type anti-spraying plug inside pipeline and anti-spraying method |
| CN101899961B (en) * | 2010-08-17 | 2012-12-12 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Controllable friction type anti-spraying plug inside pipeline and anti-spraying method |
| CN102733787A (en) * | 2012-07-12 | 2012-10-17 | 中国海洋石油总公司 | Plug-in coiled tubing induced-spraying device |
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| CN101575955B (en) | 2013-01-02 |
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