CN109267974B - Anti-blocking integrated oil production string capable of being rotated and pumped under pressure after perforation and operation method - Google Patents
Anti-blocking integrated oil production string capable of being rotated and pumped under pressure after perforation and operation method Download PDFInfo
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- CN109267974B CN109267974B CN201811448901.1A CN201811448901A CN109267974B CN 109267974 B CN109267974 B CN 109267974B CN 201811448901 A CN201811448901 A CN 201811448901A CN 109267974 B CN109267974 B CN 109267974B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003129 oil well Substances 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 16
- 238000005086 pumping Methods 0.000 claims abstract description 14
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 239000000523 sample Substances 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 8
- 238000004880 explosion Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 60
- 238000010586 diagram Methods 0.000 description 6
- 239000002893 slag Substances 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an integrated oil production pipe column capable of preventing blocking after perforation and rotating and pumping under pressure and an operation method. The method comprises the following steps: determining and adjusting a target horizon to enable the perforating gun to be opposite to the perforation to be performed; a sucker rod string; reversely pressing the casing to perforate; alternately lifting the rod tubes; the plunger is used for lifting the pump barrel; the blanking plug is pressed and knocked off; and (5) pumping and completion test by a polish rod probe. According to the invention, the two perforating strings are integrated into one string, so that the problems of reservoir damage caused by pressing a downhole pump after perforating a high-pressure oil well, complicated operation, long well occupation time, pollution emission, high operation cost and the like caused by pressing the pump under a pressure are avoided, the pump valve of the pumping string is prevented from being blocked by gun residues generated after the perforating bullet is exploded, and the construction reliability of the integrated string is ensured.
Description
Technical Field
The invention relates to the field of oil extraction in oil fields, in particular to an anti-blocking integrated oil extraction pipe column capable of being rotated and extracted under pressure after perforation and an operation method.
Background
The labor cost of oil well maintenance operation is effectively controlled and reduced, and the realization of cost reduction and synergy is a necessary requirement for the benefit development of the old oil field at low oil price. How to control and reduce the total maintenance cost is an important point of forcefully controlling the cost of the crude oil production unit, and is also a major problem to be solved by the current technicians. The old oil area is continuously developed deeply, the proportion of deep pumping wells is increased, well conditions are more complex, the problems of more operation procedures, long well duration, large influence on yield and the like are caused, and finally, the production cost is high.
In the traditional process, the oil well needs to undergo two main working procedures, namely perforation and pump-down before production operation on the premise that measures are not needed for production increase operation. Perforations are the operation of explosion openings into the borehole with special energy concentrating materials into a predetermined zone of the borehole to allow fluids in the subsurface to enter the borehole. The perforation gun string is conveyed to a position opposite to the oil layer by adopting a special cable or an oil pipe string, underground blasting is carried out by means of electrifying, stick throwing, beating or hydraulic pressurizing and the like to break through a sleeve pipe and a cement ring, and a hole seam with a certain length is formed in the oil layer, so that a liquid flow channel between the oil layer and a shaft is established. The tubular column structure is shown in fig. 1 and 2, and is not described herein in detail in view of the maturity of the conventional perforation process. And the pump-down operation is that a screen pipe (or a flowtube is called, which mainly plays a role of flowing through liquid), a tail pipe string, an oil pump, an upper oil pipe string of a pump and a sucker rod string (the bottom of which is connected with a plunger of the oil pump) are sequentially put into a preset position of a shaft. The lower pump leg structure is shown in fig. 3. Obviously, to complete the production of the oil well, one perforation string is needed to be put in, one perforation string is taken out, one pump string is put in, and three operations of taking up and putting down the string are needed.
The traditional operation mode mainly has three disadvantages:
firstly, the operation process needs to take off the pipe column for multiple times, so that the operation takes up long time, the labor intensity is high, and the process cost is high.
Secondly, the well is needed to be pumped after the high-pressure oil well is perforated in order to be capable of normally pumping, and external well entering liquid is liable to cause damage to a reservoir to a certain extent, so that the yield is finally reduced.
Thirdly, if the well is not in danger of damaging the reservoir, the pump operation under pressure is needed, so that not only is the equipment for operating under pressure needed, but also the problems of complicated operation, prolonged well occupation time, pollution caused by wellhead blowout to a certain extent and the like are caused.
Disclosure of Invention
The invention aims to solve the technical problems of providing an integrated oil production string capable of preventing blocking after perforation and rotating and pumping under pressure and an operation method thereof, which integrates a perforating string with a pump, can avoid the problems of reservoir damage caused by the pressure of a downhole pump after perforation of a high-pressure oil well, complicated operation, long well occupation time, pollution emission, high operation cost and the like caused by the pump under pressure, can prevent the blocking of a pump valve of a pumping string by gun residues generated after explosion of a perforating bullet, and ensures the construction reliability of the integrated string.
The technical scheme adopted by the invention is as follows: the utility model provides a prevent blocking behind perforation and can take out integrated oil production tubular column that changes to take out under pressure which characterized in that: the oil-well pump is connected with an oil-well pump barrel, an oil-well pump fixed valve assembly, a shell type pump lower blanking plug, a gun residue interceptor, a shell interceptor and a perforating gun string from top to bottom in sequence, wherein the gun residue interceptor is used for blocking gun residues formed after explosion of a perforation shell from being instantaneously rushed into a tubular column, the shell type pump lower blanking plug is used for throwing away a shell core by means of hydraulic force and can break down the gun residue interceptor, and the shell interceptor is used for receiving the shell core of the falling shell type pump lower blanking plug.
According to the technical scheme, the shell type pump lower blanking plug comprises a blanking plug shell, a pin seat arranged in the blanking plug shell, a shell core arranged in a sealing mode with the blanking plug shell, and a push rod connected with the upper portion of the shell core, wherein the shell core is fixed on the pin seat through a pin, and the upper end of the push rod is abutted against a valve ball of the oil pump fixing valve assembly and enables the valve ball to be positioned on the upper portion of the oil pump fixing valve.
According to the technical scheme, the ejector rod is axially connected with the shell core in a sliding manner, and a spring is arranged between the ejector rod and the shell core.
According to the technical scheme, the upper end of the shell core is provided with the central hole, the lower end of the ejector rod is provided with the central hole, and the central hole sleeved with the central hole is internally provided with the spring.
According to the technical scheme, the pressing cap is arranged outside the ejector rod, the ejector rod is pressed on the shell core through the pressing cap, and the ejector rod and the pressing cap are axially slipped.
According to the technical scheme, the lower end of the shell core is in a pointed cone shape.
According to the technical scheme, the gun residue interceptor comprises an upper joint and a lower joint, a baffle is arranged at the joint of the upper joint and the lower joint, and a plurality of small holes are formed in the baffle.
According to the technical scheme, the shell interceptor comprises an interceptor body, wherein an interceptor seat for installing a shell core is arranged on the interceptor body, and the interceptor seat is provided with a shell core.
According to the technical scheme, the interception seat is a grid which is arranged in the top end of the interceptor body and used for intercepting the core of the blanking plug, the grid extends towards the axial direction for a certain distance, and a flow passage is formed between the grids.
An operation method of the integrated oil production string capable of preventing blocking after perforation and rotating and pumping under pressure comprises the following steps: the method is characterized in that: the method comprises the following steps:
s1, after the length of the pipe column is measured on the ground, sequentially connecting tool combinations and putting into a shaft.
S2, after the perforating gun is lowered to a depth near a target layer, a depth correcting instrument is lowered into the oil pipe to measure the accurate depth of the depth correcting pup joint of the oil outlet pipe;
s3, adjusting the depth of the perforating gun: accurately adjusting a target horizon which enables the perforating gun to be opposite to the perforation to be performed through deepening a wellhead or lifting an oil pipe;
s4, sucker rod string is lowered: the wellhead is sequentially lowered into the oil pump plunger and the sucker rod column, and when the plunger is lowered to a set depth at the upper part of the pump barrel of the oil pump, the wellhead suspends the sucker rod column;
s5, reversely punching perforation of the sleeve: hydraulic pressure is applied to the sleeve through a wellhead hydraulic pump truck, so that the hydraulic pressure is conducted to a perforating gun, and the perforating gun is detonated by the hydraulic pressure to complete perforation of a target layer;
s6, alternately lifting the rod tube: 1 to 3 sucker rods and oil pipes are alternately lifted out from the wellhead, and the perforating gun is lifted out of the upper boundary of the target layer by a set distance.
S7, the plunger is used for lifting out a pump cylinder: the plunger is raised to a set height above the barrel.
S8, pressing the blanking plug positively to remove the blanking plug: hydraulic pressure is applied through a wellhead, so that the hydraulic pressure is conducted to a shell type pump lower blanking plug at the lower part of an oil pump fixed valve, a shell core is knocked off by the hydraulic pressure, and the hydraulic pressure falls on a shell interceptor;
s9, pump-connected rod exploratory pump trial pumping completion: the wellhead is connected with a polish rod in a switching way, the plunger is led into the pump cylinder to probe the pump again, and after the anti-flushing distance is improved, the liquid is extracted in a test mode and the well is completed for extraction.
The beneficial effects obtained by the invention are as follows:
1. the two-trip perforating pipe column and the one-trip pump pipe column are integrated into one-trip pipe column, so that the problems of reservoir damage caused by the pressure of the underground pump after perforation of the high-pressure oil well, complicated operation, long well occupation time, pollution emission, high operation cost and the like caused by the pressure of the underground pump can be avoided, the pump valve of the pumping pipe column can be prevented from being blocked by gun residues generated after explosion of the perforating bullet, and the construction reliability of the integrated pipe column is ensured.
2. The shell type under-pump plug is arranged between the oil pump and the gun residue interceptor, gun residues generated during perforation are blocked by the gun residue interceptor, and then the plug pin is sheared by pressurizing in a wellhead oil pipe; the pins are sheared, the explosive force generated instantaneously ejects the shell core, the gun residue interceptor is broken down, enough oil flow channels are ensured, the oil pump can work normally, and the one-time success rate of combined operation of perforation and pump discharging is improved.
3. By arranging the shell interceptor, on one hand, the smoothness of the production channel is not affected, and on the other hand, the falling shell cores can be accepted, so that the shell cores can not fall into the inner holes of the perforating device, the central through-flow channel of the perforating gun can not be blocked, the annular overflow between the shell cores and the oil pipe can not affect the liquid inlet discharge capacity, and the smooth operation of the combined operation of perforation and pump discharge is ensured.
Drawings
Fig. 1 is a schematic diagram of a cable-transfer perforating string as mentioned in the background.
Fig. 2 is a schematic diagram of a tubing conveyed perforating string as mentioned in the background.
Fig. 3 is a schematic diagram of a downhole pumping string as mentioned in the background.
Fig. 4 is a schematic diagram of an integrated oil production string capable of being rotated and pumped under pressure after perforation.
Fig. 5 is a schematic view of a shell type pump lower plug.
Fig. 6 is a perspective cross-sectional view of a shell pump lower blanking plug.
Fig. 7 is a schematic diagram of a slag interceptor configuration.
Fig. 8 is a schematic structural view of a baffle of the slag interceptor.
Fig. 9 is a schematic diagram of a projectile core breakdown slag interceptor.
Fig. 10 is a perspective cross-sectional view of the projectile interceptor.
Wherein: i-an oil layer; II, artificial well bottom; III, sand surface; IV, a sleeve; v-screen pipe; VI, tail pipe; VII-an oil pump; VIII, an oil pipe; IX-sucker rod; x is well fluid; XI-special cable; 1-oil pipe depth correction pup joint; 2-a pump barrel of the oil-well pump; 3-fixed valve cover of oil pump; 3-1-a fixed valve housing of the oil pump; 4-a fixed valve ball of the oil pump; 5-fixed valve seat of oil pump; 6-a shell type pump lower blanking plug; 6-1, a mandril; 6-2, pressing the cap; 6-3, shearing pins; 6-4, a sealing ring; 6-5-springs; 6-shell cores; 6-7, blanking plug shell; 6-8, a shear pin seat ring; 7, a cinder interceptor; 7-1-upper joint; 7-2, a baffle; 7-3-lower joint; 8-a shell interceptor; 8-1, an interception seat; 8-2-a flow-through channel; 8-3-interceptor bodies; 9-perforating gun string.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 4, this embodiment provides an integrated oil production string with anti-blocking function and pressure rotary pumping function after perforation, which comprises an oil pipe deeper nipple 1, an oil pump barrel 2, an oil pump fixed valve assembly, a shell type pump lower plug 6, a gun residue interceptor 7, a shell interceptor 8 and a perforation gun string 9 which are sequentially connected from top to bottom.
The oil pump fixed valve assembly comprises an oil pump fixed valve cover 3, an oil pump fixed valve seat 5 and a valve ball 4. As shown in fig. 5, a pump-fixed valve housing 3 and a pump-fixed valve seat 5 are provided in the pump-fixed valve housing 3-1 in this order, and a valve ball 4 is provided between the pump-fixed valve housing 3 and the pump-fixed valve seat 5.
As shown in fig. 5 and 6, the shell type pump lower blanking plug comprises a blanking plug shell 6-7, a pin seat 6-8 arranged in the blanking plug shell 6-7, a shell core 6-6 arranged in a sealing way with the blanking plug shell through a sealing ring 6-4, and a push rod 6-1 connected with the upper part of the shell core 6-6, wherein the shell core 6-6 is fixed on the pin seat 6-8 through a pin 6-3, the upper end of the push rod 6-1 is abutted against a valve ball 4 of an oil pump fixing valve assembly, and the valve ball 4 is arranged on the upper part of the oil pump fixing valve, namely, the push rod 6-1 has a descending space through the valve ball 4. The ejector rod 6-1 is axially slidably connected with the shell core 6-6, a central hole is formed in the upper end of the shell core 6-6, a central hole is formed in the lower end of the ejector rod 6-1, and a spring 6-5 is arranged in the central hole sleeved with the ejector rod 6-1. The outside of the ejector rod 6-1 is provided with a pressing cap 6-2, the ejector rod 6-1 is pressed on the shell core 6-6 through the pressing cap 6-2, and the ejector rod 6-1 and the pressing cap 6-2 are axially slipped.
Still be connected with the shot residue interceptor 7 between the blanking plug 6 under the shell pump and the shell interceptor 8, its main role is to be used for stopping to intercept the shot residue that forms after the perforation bullet explodes and gush out in the twinkling of an eye into the tail pipe, avoids shot residue card blanking plug under the pump and pump valve to lead to the tubular column inefficacy.
As shown in fig. 7 and 8, the slag interceptor comprises an upper joint 7-1 and a lower joint 7-2, a baffle 7-3 is arranged at the joint of the upper joint and the lower joint, the baffle is made of a copper plate with a certain thickness, has stronger plasticity, and can smoothly realize flanging when a shell core breaks through the copper plate, thereby forming a flow passage with a larger diameter. The baffle 7-3 is provided with through holes 7-2-1 uniformly distributed in a cross shape. The through holes on the baffle are dense and tiny, so that the effect of intercepting the gun residues can be achieved, and after pressure diffusion after perforation, the gun residues can naturally subside and cannot upwards flow in. The lower end of the shell core 6-6 is in a sharp cone shape and is used for breaking through a baffle plate.
The through holes on the baffle plate mainly have two functions: firstly, the easy-to-pull opening similar to a stamp is used for enabling the shell core to be more easily broken and tearing the baffle plate to form a large-diameter through-flow channel (shown in figure 9); secondly, the hydraulic balance of the gun residue interceptor is ensured, and the baffle is prevented from being broken by the higher hydrostatic column pressure at the deep well.
The shell interceptor 8 is mainly used for receiving the dropped shell cores 6-6 and avoiding the shell cores from blocking the center flow passage of the perforating gun. As shown in fig. 10, the interceptor comprises an interceptor body 8-3, an interceptor seat 8-1 for installing a shell core 6-6 is arranged on the interceptor body 8-3, and the interceptor body 8-3 and the interceptor seat 8-1 are integrally formed. The interception seat 8-1 is a grid which is arranged in the top end of the interceptor body and used for intercepting a core of the interceptor, the grid extends towards the axial direction for a certain distance, and a flow passage is formed between the grids. The grid comprises two parallel baffle plates, the middle parts of the two baffle plates are respectively provided with an arc section protruding outwards, the two arc sections are concentric and have equal radius, a central hole formed by the two arc sections is used for receiving the shell core 6-6, and other holes also form a production channel, so that the production channel cannot be blocked even if the shell core is located on the interception seat 8-2.
The perforating gun string 9 is a mature underground blasting tool used for perforation in petroleum industry, and is mainly divided into two types of common perforating guns and full-bore perforating guns. And the common perforating gun can also realize the overcurrent liquid inlet function after blasting.
The invention also provides an operation method of the integrated oil production pipe column which is blocked after perforation and can be rotated and pumped under pressure, comprising the following steps: s1, lower combined pipe column: after the length of the pipe column is measured on the ground, the tool assemblies are connected in sequence and run into the well bore.
S2, gamma and magnetic positioning combined depth correction: after the perforating gun is lowered to the depth near the target layer, a gamma and magnetic positioning combined depth correcting instrument is lowered into the oil pipe, and the accurate depth of the oil outlet pipe depth correcting nipple 1 is compared and measured through a specific method.
S3, adjusting the depth of the perforating gun string 9: according to the measured depth of the oil pipe depth correcting pup joint 1 and the total length from the oil pipe depth correcting pup joint to the perforating gun, the perforating gun 9 is accurately adjusted to be opposite to the target horizon to be perforated by deepening or lifting the oil pipe at the wellhead.
S4, sucker rod string is lowered: the wellhead is lowered into the pump plunger and sucker rod string in sequence, and when the plunger is lowered to a depth of 10 to 20 m above the pump barrel 2 of the oil pump, the wellhead suspends the sucker rod string.
S5, reversely punching perforation of the sleeve: hydraulic pressure is applied to the casing through the wellhead hydraulic pump truck, so that the hydraulic pressure is conducted to the perforating gun, and the perforating gun is detonated by the hydraulic pressure to complete perforation of the target layer.
S6, alternately lifting the rod tube: the wellhead alternately lifts 1 to 3 sucker rods and oil pipes, and the perforating gun is lifted to the upper boundary of the target layer by 10 to 20 meters.
S7, the plunger brings out the pump barrel 2 of the oil pump: the plunger is lifted out of the pump cylinder 10 to 20 meters.
S8, pressing and removing the shell type pump lower blanking plug 6: hydraulic pressure is applied in the oil pipe through the wellhead hydraulic pump truck, so that the hydraulic pressure is conducted to a shell type pump lower blanking plug at the lower part of the oil pump fixed valve, the shell core 6-6 is knocked off by the hydraulic pressure, the residue interceptor 7 is broken down, and finally the hydraulic pressure falls on the shell interceptor 8.
S9, pump-connected rod exploratory pump trial pumping completion: the wellhead is connected with a polish rod in a switching way, the plunger is led into the pump cylinder to probe the pump again, and after the anti-flushing distance is improved, the liquid is extracted in a test mode and the well is completed for extraction.
Claims (8)
1. The utility model provides a prevent blocking behind perforation and can take out integrated oil production tubular column that changes to take out under pressure which characterized in that: the oil-well pump comprises an oil-well pump barrel, an oil-well pump fixed valve assembly, a shell type pump lower blanking plug, a residue interceptor, a shell interceptor and a perforating gun string, wherein the residue interceptor is used for blocking residue formed after explosion of a perforation shell from being instantaneously shone into a tubular column, the shell type pump lower blanking plug is used for throwing away the shell core by means of hydraulic force and can break through the residue interceptor, the shell interceptor is used for receiving the shell core of the falling shell type pump lower blanking plug, the shell type pump lower blanking plug comprises a blanking plug shell, a pin seat arranged in the blanking plug shell, the shell core is in sealing arrangement with the blanking plug shell, and a push rod connected with the upper part of the shell core, the shell core is fixed on the pin seat through a pin, the upper end of the push rod is abutted against a valve ball of the oil-well pump fixed valve assembly, the valve ball is positioned on the upper part of the oil-well pump fixed valve, the push rod is axially slidably connected with the shell core, and a spring is arranged between the push rod and the valve core, and the oil-well pump fixed valve assembly comprises an oil-well pump fixed cover, an oil-well pump fixed valve seat and a valve seat.
2. The integrated production string of claim 1, wherein: the upper end of the shell core is provided with a central hole, the lower end of the ejector rod is provided with a central hole, and springs are arranged in the central holes sleeved with the central hole.
3. The integrated production string of claim 1, wherein: the ejector rod is provided with a pressing cap outside, the ejector rod is pressed on the shell core through the pressing cap, and the ejector rod and the pressing cap are axially slipped.
4. The integrated production string of claim 1, wherein: the lower end of the shell core is in a pointed cone shape.
5. The integrated production string of claim 1, wherein: the gun residue interceptor comprises an upper joint and a lower joint, a baffle is arranged at the joint of the upper joint and the lower joint, and a plurality of small holes are formed in the baffle.
6. The integrated production string of claim 1, wherein: the shell interceptor comprises an interceptor body, an interceptor seat for installing a shell core is arranged on the interceptor body, and a flow passage is arranged on the interceptor seat.
7. The integrated production string of claim 6, wherein: the interception seat is a grid which is arranged in the top end of the interceptor body and used for intercepting a core of the interceptor, the grid extends towards the axial direction for a certain distance, and a flow passage is formed between the grids.
8. A method of operating an integrated production string with pressure swing pump for post-perforating anti-stuck as claimed in any one of claims 1 to 7: the method is characterized in that:
the method comprises the following steps:
s1, after the length of a pipe column is measured on the ground, sequentially connecting tool combinations and putting into a shaft;
s2, after the perforating gun is lowered to a depth near a target layer, a depth correcting instrument is lowered into the oil pipe to measure the accurate depth of the depth correcting pup joint of the oil outlet pipe;
s3, adjusting the depth of the perforating gun: accurately adjusting a target horizon which enables the perforating gun to be opposite to the perforation to be performed through deepening a wellhead or lifting an oil pipe;
s4, sucker rod string is lowered: the wellhead is sequentially lowered into the oil pump plunger and the sucker rod column, and when the plunger is lowered to a set depth at the upper part of the pump barrel of the oil pump, the wellhead suspends the sucker rod column;
s5, reversely punching perforation of the sleeve: hydraulic pressure is applied to the sleeve through a wellhead hydraulic pump truck, so that the hydraulic pressure is conducted to a perforating gun, and the perforating gun is detonated by the hydraulic pressure to complete perforation of a target layer;
s6, alternately lifting the rod tube: alternately lifting 1 to 3 sucker rods and oil pipes from a wellhead, and lifting the perforating gun out of the upper boundary of a target layer by a set distance;
s7, the plunger is used for lifting out a pump cylinder: the plunger is lifted out of the pump barrel to set the height;
s8, pressing the blanking plug positively to remove the blanking plug: hydraulic pressure is applied through a wellhead, so that the hydraulic pressure is conducted to a shell type pump lower blanking plug at the lower part of an oil pump fixed valve, a shell core is knocked off by the hydraulic pressure, and the hydraulic pressure falls on a shell interceptor;
s9, pump-connected rod exploratory pump trial pumping completion: the wellhead is connected with a polish rod in a switching way, the plunger is led into the pump cylinder to probe the pump again, and after the anti-flushing distance is improved, the liquid is extracted in a test mode and the well is completed for extraction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811448901.1A CN109267974B (en) | 2018-11-28 | 2018-11-28 | Anti-blocking integrated oil production string capable of being rotated and pumped under pressure after perforation and operation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811448901.1A CN109267974B (en) | 2018-11-28 | 2018-11-28 | Anti-blocking integrated oil production string capable of being rotated and pumped under pressure after perforation and operation method |
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| CN109267974A CN109267974A (en) | 2019-01-25 |
| CN109267974B true CN109267974B (en) | 2024-04-16 |
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| CN113738314B (en) * | 2020-05-29 | 2024-03-22 | 中国石油化工股份有限公司 | Integrated pump-suction combined operation pressurized rotary pump pipe column and plugging tool and method |
| CN114109270B (en) * | 2020-08-31 | 2024-05-28 | 中国石油天然气股份有限公司 | Perforating and steam injection production primary pipe column and perforating and steam injection production primary oil extraction method |
| CN113378438B (en) * | 2021-06-17 | 2022-07-19 | 长江大学 | Method and system for analyzing reliability of perforating string system and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4917189A (en) * | 1988-01-25 | 1990-04-17 | Halliburton Company | Method and apparatus for perforating a well |
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