CN108716386B - Application method of ball-throwing type pump-free exploitation device for oil field - Google Patents
Application method of ball-throwing type pump-free exploitation device for oil field Download PDFInfo
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- CN108716386B CN108716386B CN201810283005.8A CN201810283005A CN108716386B CN 108716386 B CN108716386 B CN 108716386B CN 201810283005 A CN201810283005 A CN 201810283005A CN 108716386 B CN108716386 B CN 108716386B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 85
- 238000006243 chemical reaction Methods 0.000 claims abstract description 83
- 239000007788 liquid Substances 0.000 claims abstract description 75
- 238000004519 manufacturing process Methods 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 239000005997 Calcium carbide Substances 0.000 claims abstract description 30
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims abstract description 30
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 13
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 13
- 239000003129 oil well Substances 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 206010000210 abortion Diseases 0.000 description 3
- 231100000176 abortion Toxicity 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- 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
- E21B43/122—Gas lift
- E21B43/123—Gas lift valves
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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)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Check Valves (AREA)
Abstract
The invention relates to a using method of a ball-throwing type pump-free exploitation device for an oil field. The technical scheme is as follows: the reactor base, the sealing cylinder body and the exhaust valve carrier form a calcium carbide containing cavity, the exhaust valve carrier is provided with a plurality of one-way exhaust valves, the outer side of the exhaust valve carrier is movably connected with a sealing pressure bearing sleeve, a reaction opening valve is installed in the sealing pressure bearing sleeve and moves downwards into a cavity in the middle of the exhaust valve carrier through the reaction opening valve, liquid of the oil production string on the upper side flows into a water inlet of a buffer pipe, the calcium carbide in the sealing cylinder body reacts with the flowing liquid, generated gas is upwards sprayed out through the one-way exhaust valves, and pressurization is achieved for the liquid in the oil production string. The beneficial effects are that: firstly, the reaction opening valve is safe and reliable and has a self-locking function; secondly, the operation is convenient and fast, steel balls are put into the oil production pipe column, the switching function is realized, and the liquid is controlled to enter the sealed cylinder body to react with the calcium carbide; thirdly, the controllability is strong, and the gas that produces is also controllable as calcium carbide reacts with controllable water.
Description
Technical Field
The invention relates to a pump-free oil well exploitation method, in particular to a use method of a ball-throwing pump-free exploitation device for an oil field.
Background
In oil and gas production, one such situation is often encountered: because the energy of stratum in the underground is not enough, unable flowing by oneself forms natural flowing well, however, some oil gas wells are in the operation process, the condition of overflow takes place often again, under this condition, just need carry out the killing operation to this oil gas well, if the killing fluid density that the killing adopted is too big, still need to carry out the induced abortion operation before the oil gas underground pump, if appear out of specification operation among the operation process of induced abortion operation, the improper condition of induced abortion will often take place, this will cause certain destruction with ground personnel or equipment and surrounding environment, even more incident takes place.
The Chinese patent application number is 2018100317024, the patent name is 'an oil and gas well pump-free exploitation device and method', the technical scheme is as follows: the upper inner cavity of the central tube is provided with a flow reducing baffle ring, a self-sealing ring is fixedly arranged above the flow reducing baffle ring, the outer wall of the bottom of the central tube is sleeved with a pressure support ring, the upper side of the pressure support ring is sleeved with a water-swelling rubber tube, a water permeable control ring is arranged above the water-swelling rubber tube, the outer wall of the water permeable control ring is connected with a sealing steel bushing, a water control cavity is formed between the sealing steel bushing and the central tube, the water control cavity is sequentially provided with the water permeable control ring, an energy replenisher and a one-way valve from bottom to top, and calcium carbide is filled. The invention can eliminate production accidents caused by improper induced flow by combining the stratum energy supplementing device and the pump-free mining device into a whole, also avoids various damages to personnel or equipment, also reduces the pollution to the surrounding environment, also greatly saves the mining cost and improves the economic benefit. But it has problems that: when the mining operation needs to be realized as soon as possible, the water-swellable rubber needs a certain time to form swelling, so that the mining operation cannot be realized immediately, and the water-swellable rubber cannot be applied to a well site with required operation time.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a using method of a ball-throwing type pump-free exploitation device for an oil field, which can throw steel balls to quickly realize the reaction of water and calcium carbide, further realize the supplement of liquid energy in a short time and realize the quick exploitation of petroleum liquid.
The invention provides a ball-throwing type pump-free exploitation device for an oil field, which adopts the technical scheme that the ball-throwing type pump-free exploitation device comprises the following steps:
a. assembling the lower part of the ball-throwing type pump-free exploitation device for the oil field: firstly, welding a buffer tube (5) at the center of a reactor base (2), then movably connecting the reactor base (2) with the bottom of a sealing cylinder body (3), installing calcium carbide (4) in a cavity formed by the buffer tube (5), the reactor base (2) and the sealing cylinder body (3), and then movably connecting an exhaust valve carrier (7) provided with a one-way exhaust valve with the upper part of the sealing cylinder body (3);
b. assembling the upper part of the ball-throwing type pump-free exploitation device for the oil field: the lower end of a sealing pressure bearing sleeve (12) is movably connected with an exhaust valve carrier (7), a reaction opening valve (11) is located in a center hole of the exhaust valve carrier (7), then a sealing short section (13) is rotationally fixed at the top of the sealing pressure bearing sleeve (12), and meanwhile, the reaction opening valve (11) is pushed to move downwards to a static state, so that the assembly is completed;
c. when the well is lowered, the oil production pipe (14) is movably connected with the sealing short joint (13), then the well is lowered to a set position in a casing of the oil well, liquid in the stratum enters an oil casing cavity between a lower packer (15) and an upper packer (17) through a perforation of the casing, and enters the oil production pipe (14) after being filtered by an open hole screen pipe (16) and is filled in the oil production pipe (14);
d. replenishing energy to the stratum and starting oil production: an operator on the ground puts a steel ball into the oil production string (14), the steel ball falls along the inner cavity of the oil production string, sits on the upper part of a liquid inlet cavity (11.4) of a reaction opening valve (11), liquid is blocked, the reaction opening valve (11) moves downwards under the action of liquid pressure, a lower valve body (11.3) enters the inner cavity of a central hole of an exhaust valve carrier (7), an intermediate body (11.2) leaves a second step above an inner boss of a sealing pressure bearing sleeve (12) and moves downwards to a first step below the inner boss of the sealing pressure bearing sleeve (12) to form an overflowing channel, the liquid flows downwards into a buffer tube (5) along an annular space between the sealing pressure bearing sleeve (12) and the reaction opening valve (11) and enters a sealing cylinder body (3) along a water inlet (6), water in the liquid and calcium carbide in the sealing cylinder body (3) are subjected to chemical reaction to generate acetylene gas, along with the pressure rise of acetylene gas in the sealing cylinder body (3), the one-way exhaust valve is opened, a large amount of acetylene gas is discharged upwards along an annular space between the sealing pressure bearing sleeve (12) and the reaction opening valve (11), the liquid pressure of an inner cavity of the oil production string (14) is improved, and the liquid is further pushed to be sprayed upwards until the liquid reaches a ground pipeline through a wellhead device (18).
In the step c, before the steel ball is not thrown into the ball-throwing type pump-free exploitation device for the oil field in the well, the liquid inlet cavity (11.4) of the reaction opening valve (11) is opened, liquid in the oil production string (14) passes through the water outlet (11.5) and enters the annular space between the reaction opening valve (11) and the oil production string (14), so that the internal pressure and the external pressure are balanced, the contact area of the lower surface and the liquid is larger than that of the upper surface, and the position stability of the reaction opening valve (11) is ensured.
In the step d, the liquid passes through the annular space between the lower valve body (11.3) and the exhaust valve carrier (7) along the annular space between the sealed pressure bearing sleeve (12) and the reaction opening valve (11) and then enters the buffer tube (5), so that the amount of water entering the sealed cylinder body (3) is controllable, the reaction of the calcium carbide and the water is also controllable, and the calcium carbide continuously generates gas to pressurize the liquid in the oil production pipe column.
In the step d, after the steel ball is put into, the steel ball is seated on the upper part of the liquid inlet cavity (11.4) of the reaction open valve (11) to block liquid, the stress of the lower surface of the intermediate body (11.2) of the reaction open valve (11) disappears, so that the upper and lower stress balance of the reaction open valve (11) is broken, and the reaction open valve (11) moves downwards.
The calcium carbide adopts a rod-shaped structure.
Preferably, the reaction open valve (11) comprises an upper valve body (11.1), an intermediate body (11.2), a lower valve body (11.3) and a liquid inlet cavity (11.4), wherein the upper valve body (11.1), the intermediate body (11.2) and the lower valve body (11.3) are all cylindrical structures, the outer diameter of the intermediate body (11.2) is larger than the outer diameter of the upper valve body (11.1), the outer diameter of the intermediate body (11.2) is smaller than the inner diameter of an inner boss of the sealing pressure bearing sleeve (12), and the outer diameter of the upper valve body (11.1) is smaller than the inner diameter of the sealing short section (13); the outer diameter of the lower valve body (11.3) is smaller than the inner diameter of a central hole of the one-way exhaust valve; the bottom of the liquid inlet cavity (11.4) is closed, and the top is open.
Preferably, the reactor base (2) is of a circular structure; the sealing cylinder body (3) is of a cylindrical structure, and a buffer tube (5) is arranged in the middle of the sealing cylinder body; 3-8 one-way exhaust valves are distributed on the exhaust valve carrier (7).
The invention has the beneficial effects that: firstly, the reaction opening valve is safe and reliable, when the device is not produced, the reaction opening valve has a self-locking function, because a central hole of the reaction opening valve is open, liquid in the oil production string passes through a water outlet and enters an annular space between the reaction opening valve and the oil production string, so that the internal pressure and the external pressure are balanced, and the contact area of the lower surface and the liquid is larger than that of the upper surface, so that the position stability of the reaction opening valve is ensured, and the self-locking function is realized; secondly, the operation is convenient and fast, when the method is operated, only a steel ball needs to be put into the oil production string, and the steel ball is seated at the opening of the central hole of the reaction opening valve to block liquid, so that the self-locking function of the reaction opening valve is broken, and the reaction opening valve moves downwards to realize the opening and closing function, and the liquid is controlled to enter the sealed cylinder body to chemically react with calcium carbide; thirdly, the controllability is strong, because the flow passage formed by the annular space between the reaction opening valve and the oil production pipe and the annular space between the reaction opening valve and the central hole of the exhaust valve carrier can set the liquid inlet amount according to the required gas amount, the calcium carbide reacts with controllable water, and the generated gas is controllable, so that the pressure increase of the oil production pipe is controllable, and the generated gas is discharged through the one-way exhaust valve without potential safety hazard; fourthly, the generated gas is pollution-free, the generated acetylene gas is water and carbon dioxide after being combusted, fifthly, the acetylene gas is pollution-free to an oil well, and the residual products of the reaction can be taken out together when the well is repaired.
Drawings
FIG. 1 is a schematic view of the downhole configuration of the present invention;
FIG. 2 is a schematic structural diagram of the invention after a steel ball is put into the well;
FIG. 3 is a schematic view of the reaction opening valve;
FIG. 4 is a top view of the vent valve carrier;
in the upper diagram: the device comprises a sleeve 1, a reactor base 2, a sealing cylinder 3, calcium carbide 4, a buffer tube 5, a water inlet 6, an exhaust valve carrier 7, a sealing steel ball 8, a steel ball pressure spring 9, a spring pressure cap 10, a reaction opening valve 11, a sealing pressure bearing sleeve 12, a sealing short section 13, an oil production string 14, a lower packer 15, an open hole sieve tube 16, an upper packer 17 and a wellhead device 18; the valve comprises an upper valve body 11.1, an intermediate body 11.2, a lower valve body 11.3, a liquid inlet cavity 11.4, a water outlet 11.5 and a sealing groove 11.6.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to the attached figure 1, the invention provides a ball-throwing type pump-free exploitation device for an oil field, which has the technical scheme that: the device comprises a reactor base 2, a sealing cylinder body 3, calcium carbide 4, a buffer tube 5, an exhaust valve carrier 7, a one-way exhaust valve, a reaction opening valve 11, a sealing pressure bearing sleeve 12 and a sealing short section 13, wherein the reactor base 2, the sealing cylinder body 3 and the exhaust valve carrier 7 form a calcium carbide accommodating cavity, the buffer tube 5 is arranged in the middle of the sealing cylinder body 3, and a plurality of water inlets 6 are formed in the buffer tube 5; the exhaust valve carrier 7 is provided with a plurality of one-way exhaust valves, each one-way exhaust valve consists of a sealing steel ball 8, a steel ball pressure spring 9 and a spring pressure cap 10, the sealing steel ball 8 is connected with the spring pressure cap 10 through the steel ball pressure spring 9, and the spring pressure cap 10 is movably connected with the exhaust valve carrier 7; the outer side of the exhaust valve carrier 7 is movably connected with a sealing pressure bearing sleeve 12, the upper side of the sealing pressure bearing sleeve 12 is connected with an oil production pipe column 14 through a sealing short section 13, a reaction opening valve 11 is installed in the sealing pressure bearing sleeve 12 and moves downwards into a cavity in the middle of the exhaust valve carrier 7 through the reaction opening valve 11, liquid of the oil production pipe column 14 on the upper side flows into a water inlet 6 of a buffer pipe 5, calcium carbide 4 in a sealing cylinder body 3 reacts with the flowing liquid, generated gas is upwards sprayed out through a one-way exhaust valve, and pressurization is achieved on the liquid in the oil production pipe column 14.
The outer wall of the sealing pressure-bearing sleeve 12 is of a cylindrical structure, an inner boss is arranged in the middle of the inner wall, and an inner thread is arranged on the inner wall of the upper side of the inner boss.
The sealing short section 13 is connected with the internal thread of the sealing pressure-bearing sleeve 12, the bottom of the sealing short section 13 is in contact with the upper edge of the inner boss to form a second-stage step, and the lower edge of the inner boss is a first-stage step.
Referring to the attached figure 3, the reaction open valve 11 of the invention comprises an upper valve body 11.1, an intermediate body 11.2, a lower valve body 11.3 and a liquid inlet cavity 11.4, wherein the upper valve body 11.1, the intermediate body 11.2 and the lower valve body 11.3 are all cylindrical structures, the outer diameter of the intermediate body 11.2 is larger than the outer diameter of the upper valve body 11.1, the outer diameter of the intermediate body 11.2 is smaller than the inner diameter of an inner boss of a sealing pressure bearing sleeve 12, and the outer diameter of the upper valve body 11.1 is smaller than the inner diameter of a sealing short section 13; the outer diameter of the lower valve body 11.3 is smaller than the inner diameter of a central hole of the one-way exhaust valve; the bottom of the liquid inlet cavity 11.4 is closed, and the top is open; in addition, the outer walls of the upper valve body 11.1 and the middle body 11.2 are provided with a sealing groove 11.6, the upper valve body 11.1 and the inner cavity of the sealing short section 13 are sealed through a sealing gasket, and the middle body 11.2 and the inner boss of the sealing pressure sleeve 12 are sealed.
Wherein, the upper surface of the upper valve body 11.1 is in a conical structure; the lower surface of the intermediate body 11.2 is of a conical structure; the middle part of the outer wall of the lower valve body 11.3 is provided with a water outlet 11.5, the inside and the outside of the liquid inlet cavity 11.4 are communicated through the water outlet 11.5, and the top of the liquid inlet cavity 11.4 is opened and closed through a steel ball.
In addition, the calcium carbide of the invention is prepared by rod-shaped calcium carbide; the reactor base 2 is of a circular structure; the sealing cylinder body 3 is of a cylindrical structure, and a buffer tube 5 is arranged in the middle of the sealing cylinder body; in addition, the wellhead is an existing conventional wellhead, is a conventional technology familiar to those skilled in the art, and is not described in detail.
Referring to fig. 4, 3-8 one-way exhaust valves are distributed on the exhaust valve carrier 7 of the present invention.
The invention provides a ball-throwing type pump-free exploitation device for an oil field, which comprises the following use processes:
1. assembling the lower part of the ball-throwing type pump-free exploitation device for the oil field: firstly, welding a buffer tube 5 at the center of a reactor base 2, then movably connecting the reactor base 2 with the bottom of a sealing cylinder body 3, installing calcium carbide 4 in a cavity formed by the buffer tube 5, the reactor base 2 and the sealing cylinder body 3, and then movably connecting an exhaust valve carrier 7 provided with a one-way exhaust valve with the upper part of the sealing cylinder body 3;
2. assembling the upper part of the ball-throwing type pump-free exploitation device for the oil field: movably connecting the lower end of a sealing pressure bearing sleeve 12 with an exhaust valve carrier 7, seating a reaction opening valve 11 in a central hole of the exhaust valve carrier 7, rotationally fixing a sealing short section 13 at the top of the sealing pressure bearing sleeve 12, and simultaneously pushing the reaction opening valve 11 to move downwards to a static state to finish assembly;
3. when the well is lowered, the oil production pipe 14 is movably connected with the sealing short joint 13, then the well is lowered to a set position in a casing of the oil well, liquid in the stratum enters an oil casing cavity between a lower packer 15 and an upper packer 17 through a perforation of the casing, and enters the oil production pipe 14 after being filtered by an open hole screen pipe 16 to be filled in the oil production pipe 14;
4. replenishing energy to the stratum and starting oil production: an operator on the ground puts a steel ball into the oil production string 14, the steel ball falls along the inner cavity of the oil production string and sits on the upper part of a liquid inlet cavity 11.4 of the reaction open valve 11, liquid is blocked, the reaction open valve 11 moves downwards under the action of liquid pressure, the lower valve body 11.3 enters the inner cavity of a central hole of the exhaust valve carrier 7, the intermediate body 11.2 leaves a second step above an inner boss of the sealing pressure bearing sleeve 12 and moves downwards to a first step below the inner boss of the sealing pressure bearing sleeve 12 to form an overflowing channel, the liquid flows downwards into the buffer tube 5 along an annular space between the sealing pressure bearing sleeve 12 and the reaction open valve 11 and enters the sealing cylinder body 3 along the water inlet 6, water in the liquid and calcium carbide in the sealing cylinder body 3 are subjected to chemical reaction to generate acetylene gas, and the one-way exhaust valve is opened along with the rise of the pressure of the acetylene gas in the sealing cylinder body 3, a large amount of acetylene gas is discharged upwards along the annular space between the sealed pressure-bearing sleeve 12 and the reaction opening valve 11, so that the liquid pressure in the inner cavity of the oil production string 14 is increased, and the liquid is further pushed to be sprayed upwards until reaching a ground pipeline through the wellhead device 18.
In the step 3, before the steel ball is not put into the ball-throwing type pump-free exploitation device for the oil field which is put into the well, the liquid inlet cavity 11.4 of the reaction open valve 11 is opened, the liquid in the oil production string 14 passes through the water outlet 11.5 and enters the annular space between the reaction open valve 11 and the oil production string 14, so that the internal pressure and the external pressure are balanced, the contact area of the lower surface and the liquid is larger than that of the upper surface, and the position stability of the reaction open valve 11 is ensured.
In the step 4, the liquid passes through the annular space between the lower valve body 11.3 and the exhaust valve carrier 7 along the annular space between the sealed pressure bearing sleeve 12 and the reaction opening valve 11 and then enters the buffer tube 5, so that the amount of water entering the sealed cylinder body 3 is controllable, the reaction of the calcium carbide and the water is also controllable, and the calcium carbide continuously generates gas to pressurize the liquid in the oil production string.
In the step 4, after the steel ball is put into the reaction open valve 11, the steel ball is seated on the upper part of the liquid inlet cavity 11.4 of the reaction open valve 11 to block the liquid, the stress on the lower surface of the intermediate 11.2 of the reaction open valve 11 disappears, so that the upper and lower stress balance of the reaction open valve 11 is broken, and the reaction open valve 11 moves downwards.
The invention has the advantages that: firstly, the reaction opening valve is safe and reliable, when the device is not produced, the reaction opening valve has a self-locking function, because a central hole of the reaction opening valve is open, liquid in the oil production string passes through a water outlet and enters an annular space between the reaction opening valve and the oil production string, so that the internal pressure and the external pressure are balanced, and the contact area of the lower surface and the liquid is larger than that of the upper surface, so that the position stability of the reaction opening valve is ensured, and the self-locking function is realized; secondly, the operation is convenient and fast, when the method is operated, only a steel ball needs to be put into the oil production string, and the steel ball is seated at the opening of the central hole of the reaction opening valve to block liquid, so that the self-locking function of the reaction opening valve is broken, and the reaction opening valve moves downwards to realize the opening and closing function, and the liquid is controlled to enter the sealed cylinder body to chemically react with calcium carbide; thirdly, the controllability is strong, because the flow passage formed by the annular space between the reaction opening valve and the oil production pipe and the annular space between the reaction opening valve and the central hole of the exhaust valve carrier can set the liquid inlet amount according to the required gas amount, the calcium carbide reacts with controllable water, and the generated gas is controllable, so that the pressure increase of the oil production pipe is controllable, and the generated gas is discharged through the one-way exhaust valve without potential safety hazard; fourthly, the generated gas is pollution-free, the generated acetylene gas is water and carbon dioxide after being combusted, fifthly, the acetylene gas is pollution-free to an oil well, and the residual product calcium hydroxide of the reaction can be taken out together when the well is repaired.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (6)
1. A use method of a ball-throwing type pump-free exploitation device for an oil field is characterized by comprising the following steps:
a. assembling the lower part of the ball-throwing type pump-free exploitation device for the oil field: firstly, welding a buffer tube (5) at the center of a reactor base (2), then movably connecting the reactor base (2) with the bottom of a sealing cylinder body (3), installing calcium carbide (4) in a cavity formed by the buffer tube (5), the reactor base (2) and the sealing cylinder body (3), and then movably connecting an exhaust valve carrier (7) provided with a one-way exhaust valve with the upper part of the sealing cylinder body (3);
b. assembling the upper part of the ball-throwing type pump-free exploitation device for the oil field: the lower end of a sealing pressure bearing sleeve (12) is movably connected with an exhaust valve carrier (7), a reaction opening valve (11) is located in a center hole of the exhaust valve carrier (7), then a sealing short section (13) is rotationally fixed at the top of the sealing pressure bearing sleeve (12), and meanwhile, the reaction opening valve (11) is pushed to move downwards to a static state, so that the assembly is completed;
c. when the well is lowered, the oil production pipe (14) is movably connected with the sealing short joint (13), then the well is lowered to a set position in a casing of the oil well, liquid in the stratum enters an oil casing cavity between a lower packer (15) and an upper packer (17) through a perforation of the casing, and enters the oil production pipe (14) after being filtered by an open hole screen pipe (16) and is filled in the oil production pipe (14);
d. replenishing energy to the stratum and starting oil production: an operator on the ground puts a steel ball into the oil production string (14), the steel ball falls along the inner cavity of the oil production string, sits on the upper part of a liquid inlet cavity (11.4) of a reaction opening valve (11), liquid is blocked, the reaction opening valve (11) moves downwards under the action of liquid pressure, a lower valve body (11.3) enters the inner cavity of a central hole of an exhaust valve carrier (7), an intermediate body (11.2) leaves a second step above an inner boss of a sealing pressure bearing sleeve (12) and moves downwards to a first step below the inner boss of the sealing pressure bearing sleeve (12) to form an overflowing channel, the liquid flows downwards into a buffer tube (5) along an annular space between the sealing pressure bearing sleeve (12) and the reaction opening valve (11) and enters a sealing cylinder body (3) along a water inlet (6), water in the liquid and calcium carbide in the sealing cylinder body (3) are subjected to chemical reaction to generate acetylene gas, the one-way exhaust valve is opened along with the increase of the pressure of acetylene gas in the sealing cylinder body (3), a large amount of acetylene gas is discharged upwards along an annular space between the sealing pressure bearing sleeve (12) and the reaction opening valve (11), the liquid pressure of an inner cavity of the oil production string (14) is improved, and the liquid is further pushed to be sprayed upwards until the liquid reaches a ground pipeline through a wellhead device (18);
the reaction opening valve (11) comprises an upper valve body (11.1), an intermediate body (11.2), a lower valve body (11.3) and a liquid inlet cavity (11.4), wherein the upper valve body (11.1), the intermediate body (11.2) and the lower valve body (11.3) are all of cylindrical structures, the outer diameter of the intermediate body (11.2) is larger than the outer diameter of the upper valve body (11.1), the outer diameter of the intermediate body (11.2) is smaller than the inner diameter of an inner boss of the sealing pressure bearing sleeve (12), and the outer diameter of the upper valve body (11.1) is smaller than the inner diameter of the sealing short section (13); the outer diameter of the lower valve body (11.3) is smaller than the inner diameter of a central hole of the one-way exhaust valve; the bottom of the liquid inlet cavity (11.4) is closed, and the top is open.
2. The use method of the ball-throwing type pump-free exploitation device for the oil field according to claim 1 is characterized in that: in the step c, before the steel ball is not thrown into the ball-throwing type pump-free exploitation device for the oil field in the well, the liquid inlet cavity (11.4) of the reaction opening valve (11) is opened, liquid in the oil production string (14) passes through the water outlet (11.5) and enters the annular space between the reaction opening valve (11) and the oil production string (14), so that the internal pressure and the external pressure are balanced, the contact area of the lower surface and the liquid is larger than that of the upper surface, and the position stability of the reaction opening valve (11) is ensured.
3. The use method of the ball-throwing type pump-free exploitation device for the oil field according to claim 1 is characterized in that: in the step d, the liquid passes through the annular space between the lower valve body (11.3) and the exhaust valve carrier (7) along the annular space between the sealed pressure bearing sleeve (12) and the reaction opening valve (11) and then enters the buffer tube (5), so that the amount of water entering the sealed cylinder body (3) is controllable, the reaction of the calcium carbide and the water is also controllable, and the calcium carbide continuously generates gas to pressurize the liquid in the oil production pipe column.
4. The use method of the ball-throwing type pump-free exploitation device for the oil field according to claim 1 is characterized in that: in the step d, after the steel ball is put into, the steel ball is seated on the upper part of the liquid inlet cavity (11.4) of the reaction open valve (11) to block liquid, the stress of the lower surface of the intermediate body (11.2) of the reaction open valve (11) disappears, so that the upper and lower stress balance of the reaction open valve (11) is broken, and the reaction open valve (11) moves downwards.
5. The use method of the ball-throwing type pump-free exploitation device for the oil field according to claim 1 is characterized in that: the calcium carbide adopts a rod-shaped structure.
6. The use method of the ball-throwing type pump-free exploitation device for the oil field according to claim 1 is characterized in that: the reactor base (2) is of a circular structure; the sealing cylinder body (3) is of a cylindrical structure, and a buffer tube (5) is arranged in the middle of the sealing cylinder body; 3-8 one-way exhaust valves are distributed on the exhaust valve carrier (7).
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| CN1222647A (en) * | 1997-09-30 | 1999-07-14 | 乔A·尼尔森二世 | Ball and seat valve assembly and downhole pump utilizing said valve assembly |
| US6204429B1 (en) * | 1998-04-03 | 2001-03-20 | Washington State University Research Foundation | Methods of remediation of chemical contaminants dispersed in geologic media |
| CN102099545A (en) * | 2008-05-20 | 2011-06-15 | 环氧乙烷材料股份有限公司 | Method of manufacture and the use of a functional proppant for determination of subterranean fracture geometries |
| CN202117638U (en) * | 2011-06-23 | 2012-01-18 | 北京华油兴业能源技术有限公司 | Novel gas lifting downhole tool of continuous oil tube |
| CN102472086A (en) * | 2009-07-10 | 2012-05-23 | 佛罗泰克控股有限公司 | Flow restrictor device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222647A (en) * | 1997-09-30 | 1999-07-14 | 乔A·尼尔森二世 | Ball and seat valve assembly and downhole pump utilizing said valve assembly |
| US6204429B1 (en) * | 1998-04-03 | 2001-03-20 | Washington State University Research Foundation | Methods of remediation of chemical contaminants dispersed in geologic media |
| CN102099545A (en) * | 2008-05-20 | 2011-06-15 | 环氧乙烷材料股份有限公司 | Method of manufacture and the use of a functional proppant for determination of subterranean fracture geometries |
| CN102472086A (en) * | 2009-07-10 | 2012-05-23 | 佛罗泰克控股有限公司 | Flow restrictor device |
| CN202117638U (en) * | 2011-06-23 | 2012-01-18 | 北京华油兴业能源技术有限公司 | Novel gas lifting downhole tool of continuous oil tube |
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