CN104879123A - Self-pressurization oil-gas well liquid level testing device - Google Patents
Self-pressurization oil-gas well liquid level testing device Download PDFInfo
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- CN104879123A CN104879123A CN201510295997.2A CN201510295997A CN104879123A CN 104879123 A CN104879123 A CN 104879123A CN 201510295997 A CN201510295997 A CN 201510295997A CN 104879123 A CN104879123 A CN 104879123A
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Abstract
The invention relates to a self-pressurization oil-gas well liquid level testing device. The self-pressurization oil-gas well liquid level testing device is characterized by comprising an air gun and a pressurization device, wherein the air gun and the pressurization device are connected through a natural gas high-pressure hose; the air gun comprises a moving joint, a sound production cavity, a flange and a gas storage cavity; one end of the sound production cavity is connected with a wellhead valve through the moving joint, and the other end of the sound production cavity is connected with the flange and the gas storage cavity in a fastening manner through bolts; the pressurization device comprises a first end cover, a pressurization cavity, a connecting body, a control cavity, a second end cover and a pressurization piston; the pressurization cavity is arranged between the first end cover and the connecting body, the control cavity is arranged between the connecting body and the second end cover, and the first end cover, the pressurization cavity, the connecting body, the control cavity and the second end cover are connected in the fastening manner through bolts in sequence; the pressurization piston adopts a step-shaped piston push rod, the thick shaft end of the pressurization piston is fixed inside the control cavity, and the thin shaft end of the pressurization piston enters the interior of the pressurization cavity through a center hole of the connecting body. The self-pressurization oil-gas well liquid level testing device can be widely applied to the position testing field of offshore oil well liquid level.
Description
Technical field
The present invention relates to well recovery Monitoring and Controlling administrative skill field, particularly about one from pressurised oil gas well liquid level testing arrangement.
Background technology
In oil well production process, liquid level position test can obtain oil pumper fluid supply capacity, determines oil extraction pump submersible depth and working condition.This is to the rational production well proration of formulation, significant to rationally developing oil fields.
Liquid level position measuring method conventional is at present that Infrasonic-wave echo is measured, it utilizes gases at high pressure release to produce wavelength length instantaneously, interfere little infrasound pulse, the annular space of infrasound pulse between oil pipe and sleeve pipe is propagated to down-hole, can produce echo after running into liquid level.The time of the tubing coupling echo returned by well head microphony sensor test or the design of box cupling number contrast completion tubular column can calculate level.And the infrasound tune of the existing equipment usually adopted at present has two kinds, a kind of is the implosive utilizing external high pressure Nitrogen source gases, and another is the outer quick-fried formula utilizing oil well mouth pressure outwards to exit.Implosive device needs to regularly replace source of the gas, increases operating cost; Outer quick-fried formula device passively can only utilize well head source of the gas, when borehole pressure is not enough, and just cisco unity malfunction; Even inside and outside quick-fried convolution device can not solve the shortcoming of replacing work source of the gas completely.Because ocean platform has its particularity, periodic replacement work source of the gas particularly bothers.Therefore the liquid level testing arrangement of the not needs external air source of exploitation applicable offshore platform producing well use is significant.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of structure simple, easy to operate, effectively utilize gas in well as source of the gas from pressurised oil gas well liquid level testing arrangement.
For achieving the above object, the present invention takes following technical scheme: a kind of from pressurised oil gas well liquid level testing arrangement, it is characterized in that: it comprises air gun and supercharging device, is connected between described air gun with described supercharging device by natural gas high pressure flexible pipe; Described air gun comprises active joint, sounding cavity, flange and gas storage cavity; Described sounding cavity one end is connected with head valve by described active joint, and the described sounding cavity other end is fastenedly connected by bolt and described flange, gas storage cavity; Form sounding room between described sounding cavity and described flange, between described flange and described gas storage cavity, form air storage chamber; Described supercharging device comprises the first end cap, supercharging cavity, connector, control cavity, the second end cap and charged piston; Described supercharging cavity is arranged between described first end cap and connector, and described control cavity is arranged between described connector and the second end cap, and described first end cap, supercharging cavity, connector, control cavity and the second end cap are bolted connection successively; Described first end cap, between supercharging cavity and connector, form booster cavity; Described connector, control to form control chamber between cavity and the second end cap; Described charged piston adopts stepped piston push rod, and described control chamber is divided into the left air chamber of control chamber and the right air chamber of control chamber by the thick axle head of described charged piston; The thin axle head of described charged piston enters described supercharging inside cavity through the centre bore of described connector.
In described air gun, described sounding cavity side is provided with a sounding room venthole, and described sounding room venthole is connected with described supercharging device by a high-pressure hose; Described flange inside is provided with a sounding chamber, and sounding chamber venthole is arranged on the median plane of described flange, and sounding chamber air inlet is arranged on the side of described flange; The median plane of described flange is close to described sounding chamber venthole and is also provided with a microphony sensor; Described air storing cavity end of body is provided with air storage chamber air inlet and air storage chamber venthole; Described air storage chamber air inlet is connected with described supercharging device by another high-pressure hose; Described air storage chamber venthole is connected with described sounding chamber air inlet by pipeline, and described pipeline is also provided with electromagnetic valve and control valve.
In described supercharging device, described first end covers the first end cap air inlet and the first end cap venthole that are provided with and are communicated with described booster cavity; Be provided with breather check valve in described first end cap air inlet, in described first end cap venthole, be provided with outgassing nonreturn valve; Described outgassing nonreturn valve is connected with the air storage chamber air inlet of described air gun by described high-pressure hose; Described connector both sides are respectively arranged with the connector air inlet and connector venthole that are communicated with described control inside cavity; The first electromagnetic valve and the second electromagnetic valve is respectively arranged with in described connector air inlet and connector venthole; Described second end cap is provided with the second end cap air inlet and the second end cap venthole that are communicated with described control inside cavity; The 3rd electromagnetic valve and the 4th electromagnetic valve is respectively arranged with in described second end cap air inlet and the second end cap venthole; Described first end cap air inlet, connector air inlet are connected with the sounding room venthole of described air gun after being connected another high-pressure hose described with the second end cap air inlet by straight tube; The opening and closing of described first electromagnetic valve, the second electromagnetic valve, the 3rd electromagnetic valve and the 4th electromagnetic valve controls by existing control system.
The thick axle head external surface of described charged piston is provided with magnet ring, and described magnet ring is fixed on described charged piston by magnet ring gland, and described magnet ring gland is threaded on described charged piston; Described control cavity two ends are respectively arranged with one for detecting the Hall element of described magnet ring position on described charged piston, and the position signalling of the magnet ring described in two detected by Hall element feeds back to existing control system.
Described sounding cavity is also provided with one for detecting the pressure meter of gas pressure in well.
The first end of described supercharging device covers and is provided with one for detecting the pressure meter of gas pressure in described booster cavity.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention is owing to being provided with high-pressure hose between air gun and supercharging device, in well, gas can enter air gun by active joint, and then enter supercharging device and produce suitable air gun Initiation Pressure, do not need external air source, solve in prior art the shortcoming needing often to change work source of the gas, be more applicable to offshore production platform and use.2, the present invention is owing to being provided with air storage chamber in air gun, be provided with booster cavity and control chamber in supercharging device, in well, gas can continue supercharging in the booster cavity of supercharging device, to reach required air gun Initiation Pressure, the problem that cannot normally work when solving borehole pressure deficiency, reliability is high.3. the present invention is owing to pipeline being provided with control valve between the sounding room of air gun and air storage chamber, can regulate sounding current rate according to actual needs, use more flexible.Structure of the present invention is simple, easy to use, can be widely used in the liquid level position test of offshore field.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is air gun structural representation of the present invention
Fig. 3 is supercharging device structural representation of the present invention
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the present invention comprises air gun 1 and supercharging device 2 from pressurised oil gas well liquid level testing arrangement, is connected between air gun 1 with supercharging device 2 by natural gas high pressure flexible pipe 3.
As shown in Figure 2, air gun 1 comprises active joint 10, sounding cavity 11, flange 12 and gas storage cavity 13.Sounding cavity 11 one end is connected with head valve by active joint 10, and sounding cavity 11 other end is fastenedly connected by bolt 14 and flange 12, gas storage cavity 13.Form sounding room 15 between sounding cavity 11 and flange 12, between flange 12 and gas storage cavity 13, form air storage chamber 16.
As shown in Figure 3, supercharging device 2 comprises the first end cap 20, supercharging cavity 21, connector 22, controls cavity 23, second end cap 24 and charged piston 25.Supercharging cavity 21 is arranged between the first end cap 20 and connector 22, controlling cavity 23 is arranged between connector 22 and the second end cap 24, and the first end cap 20, supercharging cavity 21, connector 22, control cavity 23 and the second end cap 24 are bolted connection successively.First end cap 20, between supercharging cavity 21 and connector 22, form booster cavity 26, connector 22, control to form control chamber 27 between cavity 23 and the second end cap 24.Charged piston 25 adopts stepped piston push rod, and control chamber 27 is divided into the left air chamber of control chamber 271 and the right air chamber 272 of control chamber by the thick axle head of charged piston 25; The thin axle head of charged piston 25 enters supercharging cavity 21 inside through the centre bore of connector 22.
In above-described embodiment, sounding cavity 11 side is provided with a sounding room venthole 111, and sounding room venthole 111 is connected with supercharging device 2 by high-pressure hose 301.Flange 12 inside is provided with a sounding chamber 121, and sounding chamber venthole 122 is arranged on the median plane of flange 12, and sounding chamber air inlet 123 is arranged on the side of flange 12.The median plane of flange 12 is close to sounding chamber venthole 122 and is also provided with a microphony sensor 124.Gas storage cavity 13 end is provided with air storage chamber air inlet 131 and air storage chamber venthole 132.Air storage chamber air inlet 131 is connected with supercharging device 2 by high-pressure hose 302.Air storage chamber venthole 132 is connected with sounding chamber air inlet 123 by pipeline 133, pipeline 133 is provided with electromagnetic valve 134 and control valve 135.
In the various embodiments described above, first end cap 20 is provided with the first end cap air inlet 201 and the first end cap venthole 202 be communicated with booster cavity 26, and be provided with breather check valve 203 in the first end cap air inlet 201, be provided with outgassing nonreturn valve 204 in first end cap venthole 202, outgassing nonreturn valve 204 is connected with the air storage chamber air inlet 131 of air gun 1 by high-pressure hose 301.Connector 22 both sides are respectively arranged with and control the cavity 23 connector air inlet 221 that is communicated with of inside and connector venthole 222, and are respectively arranged with the first electromagnetic valve 223 and the second electromagnetic valve 224 in connector air inlet 221 and connector venthole 222.Second end cap 24 be provided with and control inner the second end cap air inlet 241 and the second end cap venthole 242 be communicated with of cavity 23, and being respectively arranged with the 3rd electromagnetic valve 243 and the 4th electromagnetic valve 244 in the second end cap air inlet 241 and the second end cap venthole 242.First end cap air inlet 201, connector air inlet 221 are connected with the sounding room venthole 111 of air gun 1 after being connected high-pressure hose 302 with the second end cap air inlet 241 by straight tube.The opening and closing of the first electromagnetic valve 223, second electromagnetic valve 224, the 3rd electromagnetic valve 243 and the 4th electromagnetic valve 244 controls by existing control system.
In the various embodiments described above, the thick axle head external surface of charged piston 25 is provided with magnet ring 251, and magnet ring 251 is fixed on charged piston 25 by magnet ring gland 252, and magnet ring gland 252 is threaded on charged piston 25.Control cavity 23 two ends are respectively arranged with one, for Hall element 231,232, two Hall element 231,232 detecting charged piston 25 upper magnetic ring 251 position, the position signalling of the magnet ring 251 detected are fed back to existing control system.
In above-described embodiment, the sounding cavity 11 of air gun 1 is provided with one for detecting the pressure meter 112 of gas pressure in well.
In the various embodiments described above, the first end cap 20 of supercharging device 2 is provided with one for detecting the pressure meter 201 of gas pressure in booster cavity 26.
In the various embodiments described above, sounding cavity 11 and flange 12 joint face adopt sealing ring to seal.
In the various embodiments described above, connector 22 centre bore outer setting has some sealing rings, makes booster cavity 26 and the complete airtight isolation of control chamber 27.
In the various embodiments described above, charged piston 25 thick end external surface is provided with some sealing rings, makes the left air chamber of control chamber 271 and the complete airtight isolation of the right air chamber of control chamber 272.
The present invention from the operating principle of pressurised oil gas well liquid level testing arrangement is:
First be connected with head valve by the active joint 10 of air gun 1, now in well, gas enters sounding room 15 by active joint 10, and enters high-pressure hose 301 by sounding room venthole 111.Control system utilizes two Hall elements 231,232 detect the signal of magnet ring 251 and then judge the position of charged piston 25, the opening and closing of FEEDBACK CONTROL first electromagnetic valve 223, second electromagnetic valve 224, the 3rd electromagnetic valve 243 and the 4th electromagnetic valve 244, alternately switching control gas circuit direction makes the left air chamber of control chamber 271 and the right air chamber 272 of control chamber replace inflation/deflation, promote charged piston 25 to move back and forth, and then make the thin axle head of charged piston 25 back and forth pass in and out booster cavity 26, change gas in booster cavity 26 volume, compression booster cavity 26 and enter air storage chamber 16.
Concrete, initializing set charged piston 25 obtains initial driving force, moves to control chamber right air chamber 272 direction.Now, Hall element 232 detects that charged piston 25 upper magnetic ring 251 is close to self-position, is sent to control system by the position signalling detected.Control system opens the second electromagnetic valve 224 and the 3rd electromagnetic valve 243, gas in well is made to enter the right air chamber 272 of control chamber by high-pressure hose 301 by the second end cap air inlet 241, promote charged piston 25 to the motion of control chamber left air chamber 261 direction, in the left air chamber 271 of control chamber, excessive gas is discharged by connector venthole 222.Because charged piston 25 is stairstepping, in control chamber 27, the area of the thick axle head of charged piston 25 is three times of the thin axle head area of charged piston 25 in booster cavity 26, and according to pressure reduction area method, in booster cavity 26, gas pressure intensity will be three times of control chamber 27.Owing to being provided with unidirectional air outlet valve 204 in the first end cap venthole 201, breather cheek valve 204 is provided with in first end cap air inlet 202, therefore when the thin axle head of charged piston 25 enters booster cavity 26, the air storage chamber 16 that in booster cavity 26, gas reduces to enter air gun 1 by the first end cap venthole 201 through high-pressure hose 302 because of volume stores.
In like manner, when Hall element 231 detects charged piston 25 upper magnetic ring 251 close to self-position, the position signalling detected is sent to control system.Control system opens the first electromagnetic valve 223 and the 4th electromagnetic valve 244, and close the second electromagnetic valve 224 and the 3rd electromagnetic valve 243, gas in well is made to enter in the left air chamber 271 of control chamber by high-pressure hose 301 through connector air inlet 221, promote charged piston to the motion of control chamber right air chamber 272 direction, in the right air chamber 272 of control chamber, excessive gas is discharged by the second end cap venthole 242.When the thin axle head of charged piston 25 deviates from booster cavity 26, in booster cavity 26 gas because of volume increase can only from air-breathing in well.
When sound wave launched by needs, control system opens electromagnetic valve 134, and by regulating control valve 135 to open aperture size adjustment sounding current rate, air storage chamber 16 inner high voltage gas being transferred in sounding chamber 121 by the sounding gas circuit that air storage chamber venthole 132, control valve 135, electromagnetic valve 134 and pipeline 133 form and producing infrasound.Infrasound passes to annular space in well by active joint 10 in sounding room 15.The echo produced in well is then entered in sounding room 15 by active joint 10 and is finally received by microphony sensor 124, and is sent to the calculating that control system carries out level.
The various embodiments described above are only for illustration of the present invention; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (10)
1., from a pressurised oil gas well liquid level testing arrangement, it is characterized in that: it comprises air gun and supercharging device, be connected by natural gas high pressure flexible pipe between described air gun with described supercharging device;
Described air gun comprises active joint, sounding cavity, flange and gas storage cavity; Described sounding cavity one end is connected with head valve by described active joint, and the described sounding cavity other end is fastenedly connected by bolt and described flange, gas storage cavity; Form sounding room between described sounding cavity and described flange, between described flange and described gas storage cavity, form air storage chamber;
Described supercharging device comprises the first end cap, supercharging cavity, connector, control cavity, the second end cap and charged piston; Described supercharging cavity is arranged between described first end cap and connector, and described control cavity is arranged between described connector and the second end cap, and described first end cap, supercharging cavity, connector, control cavity and the second end cap are bolted connection successively; Described first end cap, between supercharging cavity and connector, form booster cavity; Described connector, control to form control chamber between cavity and the second end cap; Described charged piston adopts stepped piston push rod, and described control chamber is divided into the left air chamber of control chamber and the right air chamber of control chamber by the thick axle head of described charged piston; The thin axle head of described charged piston enters described supercharging inside cavity through the centre bore of described connector.
2. one as claimed in claim 1 is from pressurised oil gas well liquid level testing arrangement, and it is characterized in that: in described air gun, described sounding cavity side is provided with a sounding room venthole, and described sounding room venthole is connected with described supercharging device by a high-pressure hose;
Described flange inside is provided with a sounding chamber, and sounding chamber venthole is arranged on the median plane of described flange, and sounding chamber air inlet is arranged on the side of described flange; The median plane of described flange is close to described sounding chamber venthole and is also provided with a microphony sensor;
Described air storing cavity end of body is provided with air storage chamber air inlet and air storage chamber venthole; Described air storage chamber air inlet is connected with described supercharging device by another high-pressure hose; Described air storage chamber venthole is connected with described sounding chamber air inlet by pipeline, and described pipeline is also provided with electromagnetic valve and control valve.
3. as claimed in claim 1 a kind of from pressurised oil gas well liquid level testing arrangement, it is characterized in that: in described supercharging device, described first end covers the first end cap air inlet and the first end cap venthole that are provided with and are communicated with described booster cavity; Be provided with breather check valve in described first end cap air inlet, in described first end cap venthole, be provided with outgassing nonreturn valve; Described outgassing nonreturn valve is connected with the air storage chamber air inlet of described air gun by described high-pressure hose;
Described connector both sides are respectively arranged with the connector air inlet and connector venthole that are communicated with described control inside cavity; The first electromagnetic valve and the second electromagnetic valve is respectively arranged with in described connector air inlet and connector venthole;
Described second end cap is provided with the second end cap air inlet and the second end cap venthole that are communicated with described control inside cavity; The 3rd electromagnetic valve and the 4th electromagnetic valve is respectively arranged with in described second end cap air inlet and the second end cap venthole;
Described first end cap air inlet, connector air inlet are connected with the sounding room venthole of described air gun after being connected another high-pressure hose described with the second end cap air inlet by straight tube;
The opening and closing of described first electromagnetic valve, the second electromagnetic valve, the 3rd electromagnetic valve and the 4th electromagnetic valve controls by existing control system.
4. as claimed in claim 2 a kind of from pressurised oil gas well liquid level testing arrangement, it is characterized in that: described first end covers the first end cap air inlet and the first end cap venthole that are provided with and are communicated with described booster cavity; Be provided with breather check valve in described first end cap air inlet, in described first end cap venthole, be provided with outgassing nonreturn valve; Described outgassing nonreturn valve is connected with the air storage chamber air inlet of described air gun by high-pressure hose;
Described connector both sides are respectively arranged with the connector air inlet and connector venthole that are communicated with described control inside cavity; The first electromagnetic valve and the second electromagnetic valve is respectively arranged with in described connector air inlet and connector venthole;
Described second end cap is provided with the second end cap air inlet and the second end cap venthole that are communicated with described control inside cavity; The 3rd electromagnetic valve and the 4th electromagnetic valve is respectively arranged with in described second end cap air inlet and the second end cap venthole;
Described first end cap air inlet, connector air inlet are connected with the sounding room venthole of described air gun after being connected another high-pressure hose described with the second end cap air inlet by straight tube;
The opening and closing of described first electromagnetic valve, the second electromagnetic valve, the 3rd electromagnetic valve and the 4th electromagnetic valve controls by existing control system.
5. one is as claimed in claim 1 or 2 or 3 or 4 from pressurised oil gas well liquid level testing arrangement, it is characterized in that: the thick axle head external surface of described charged piston is provided with magnet ring, described magnet ring is fixed on described charged piston by magnet ring gland, and described magnet ring gland is threaded on described charged piston; Described control cavity two ends are respectively arranged with one for detecting the Hall element of described magnet ring position on described charged piston, and the position signalling of the magnet ring described in two detected by Hall element feeds back to existing control system.
6. one is as claimed in claim 1 or 2 or 3 or 4 from pressurised oil gas well liquid level testing arrangement, it is characterized in that: described sounding cavity is also provided with one for detecting the pressure meter of gas pressure in well.
7. as claimed in claim 5 a kind of from pressurised oil gas well liquid level testing arrangement, it is characterized in that: described sounding cavity is also provided with one for detecting the pressure meter of gas pressure in well.
8. the one as described in claim 1 or 2 or 3 or 4 or 7, from pressurised oil gas well liquid level testing arrangement, is characterized in that: the first end of described supercharging device covers and is provided with one for detecting the pressure meter of gas pressure in described booster cavity.
9. as claimed in claim 5 a kind of from pressurised oil gas well liquid level testing arrangement, it is characterized in that: the first end of described supercharging device covers and is provided with one for detecting the pressure meter of gas pressure in described booster cavity.
10. as claimed in claim 6 a kind of from pressurised oil gas well liquid level testing arrangement, it is characterized in that: the first end of described supercharging device covers and is provided with one for detecting the pressure meter of gas pressure in described booster cavity.
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| CN201510295997.2A CN104879123B (en) | 2015-06-02 | 2015-06-02 | A kind of supercharging Oil/gas Well liquid level test device certainly |
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| CN201510295997.2A CN104879123B (en) | 2015-06-02 | 2015-06-02 | A kind of supercharging Oil/gas Well liquid level test device certainly |
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| CN104879123B CN104879123B (en) | 2017-05-31 |
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| CN108150125A (en) * | 2017-12-26 | 2018-06-12 | 贵州航天凯山石油仪器有限公司 | A kind of high-pressure well wellhead assembly and its method for generating sound source |
| CN109209476A (en) * | 2018-10-12 | 2019-01-15 | 中煤科工集团重庆研究院有限公司 | Air guide supercharging device |
| CN110617056A (en) * | 2019-11-07 | 2019-12-27 | 贵州航天凯山石油仪器有限公司 | Triggering method and device for liquid level test of high-pressure oil-gas well |
| EP3704351A4 (en) * | 2017-11-02 | 2021-03-31 | Q.E.D. Environmental Systems, Inc. | Liquid level sensor system |
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| CN109209476A (en) * | 2018-10-12 | 2019-01-15 | 中煤科工集团重庆研究院有限公司 | Air guide supercharging device |
| CN110617056A (en) * | 2019-11-07 | 2019-12-27 | 贵州航天凯山石油仪器有限公司 | Triggering method and device for liquid level test of high-pressure oil-gas well |
| CN110617056B (en) * | 2019-11-07 | 2024-03-26 | 贵州航天凯山石油仪器有限公司 | Firing method and device for testing liquid level of high-pressure oil-gas well |
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| CN104879123B (en) | 2017-05-31 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |
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