CN210738538U - Medicine injection device suitable for high-pressure environment of oil well casing - Google Patents
Medicine injection device suitable for high-pressure environment of oil well casing Download PDFInfo
- Publication number
- CN210738538U CN210738538U CN201920974698.5U CN201920974698U CN210738538U CN 210738538 U CN210738538 U CN 210738538U CN 201920974698 U CN201920974698 U CN 201920974698U CN 210738538 U CN210738538 U CN 210738538U
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- China
- Prior art keywords
- cylindrical tank
- tank body
- pipe
- oil
- injection
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- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 title claims abstract description 45
- 239000007924 injection Substances 0.000 title claims abstract description 45
- 239000003814 drug Substances 0.000 title claims abstract description 32
- 239000003129 oil well Substances 0.000 title claims abstract description 20
- 229940079593 drug Drugs 0.000 title claims description 6
- 241000191291 Abies alba Species 0.000 claims abstract description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
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Abstract
The utility model provides a medicine injection device suitable for high-pressure environment of oil well casing, a medicine injection tank is arranged on a wellhead Christmas tree, the medicine injection tank comprises a cylindrical tank body and an upper cover arranged at the upper end of the cylindrical tank body, a piston body capable of sliding along the axial direction of the cylindrical tank body is arranged in the cylindrical tank body, and a detachable balancing weight is arranged above the piston body; the piston body is divided into upper and lower two parts with the injection jar, the gravity through the balancing weight promotes the piston body downwards, accomplish the liquid medicine under the injection jar and pour into oil pipe and sheathed tube annular space in, the upper end cover setting of the jar body communicates the balance tube in oil pipe and the annular space of sleeve pipe simultaneously, the injection tube that communicates oil pipe and the annular space of sleeve pipe is set up to the lower extreme at oil pipe, the upper and lower face of the plunger body is applyed simultaneously to the pressure of sleeve pipe gas, the pressure balance to the plunger body has been kept, prevent the influence of the size of sleeve pipe gas pressure to the plunger body, and set up the check valve on adding the pipe, be convenient for to jar body interpolation medicament.
Description
Technical Field
The utility model relates to an oil recovery machinery technical field, especially an oil recovery wellhead assembly.
Background
In the production process of oil well, in order to reach the foam of eliminating the stratum liquid in the oil well or reduce the viscosity of stratum liquid, generally install injection device on the hydraulic fluid port production tree of oil well, to the annular space injection liquid medicine of oil jacket, current injection device generally adopts single injection pipe to be connected to on the well head sleeve pipe valve pedestal and be connected with the annular space of oil jacket, in dripping into oil pipe and sheathed tube annular space downwards through the gravity of medicine self, generally accomplish through the mode that the upper cover of opening the device directly added during the interpolation medicine.
When the casing gas pressure between the oil pipe of the oil well and the annular space of the casing is high, it is difficult to add the liquid medicine into the above-mentioned medicine injection device, and at the same time, the injection speed is difficult to grasp by the gravity injection close to the medicine itself.
Disclosure of Invention
The utility model provides a be suitable for oil jacket annular space injection device of high pressure environment to not enough that current injection device exists, its technical scheme does, is provided with the injection jar on the well head production tree, and the injection jar includes the tube-shape jar body and sets up the upper cover in the tube-shape jar body upper end, the tube-shape jar is internal to be provided with can be along the axial gliding piston body of the tube-shape jar body, be provided with the sealing washer between the piston body and the tube-shape jar body, the top of piston body is provided with the detachable balancing weight.
The cylindrical tank body is located below the piston body and contains a medicament to be injected into an annulus between an oil pipe and a sleeve of an oil well, the upper cover of the cylindrical tank body is connected with a balance pipe, the other end of the balance pipe is connected to a wellhead sleeve valve seat body and is communicated with the annulus between the oil pipe and the sleeve, and the balance pipe is provided with a one-way valve only allowing the medicament to flow into the cylindrical tank body.
The lower extreme of the tube-shape jar body is connected with the filling tube, and the other end of filling tube is connected the sleeve pipe valve pedestal and is communicated with the annular space between oil pipe and the sleeve pipe, and the filling tube is provided with the check valve that only allows by the outflow of the tube-shape jar body. An addition pipe for adding a chemical to the lower part of the piston body of the cylindrical tank body is provided at the lower end of the cylindrical tank body, and the addition pipe is provided with a check valve for allowing only the chemical to flow into the cylindrical tank body).
Preferably, the upper cover of the cylindrical tank body is connected with a pressure gauge for displaying the pressure above the piston body in the cylindrical tank body. The lower end of the cylindrical tank body is connected with a pressure gauge used for displaying the pressure below the piston body in the cylindrical tank body.
Preferentially, the upper cover passes through the bolt-up in the upper end of the tube-shape jar body, is provided with the support that is used for supporting the injection jar on the well head christmas tree.
This use novel oil jacket annular space injection device who is suitable for high pressure environment who provides's technical advantage: through the internal slidable piston body that sets up of jar at the injection jar, divide into upper and lower two parts with the injection jar, and set up the balancing weight in the top of piston body, gravity through the balancing weight promotes the piston body downwards, accomplish the liquid medicine under the injection jar and pour into oil pipe and sheathed tube annular space in, the upper end cover setting of the jar body simultaneously feeds through the balance tube in oil pipe and the annular space of sleeve pipe, the injection tube that feeds through oil pipe and the annular space of sleeve pipe is set up to the lower extreme at oil pipe, the upper and lower face of the plunger body is applyed simultaneously to the pressure of sleeve pipe gas, the pressure balance to the plunger body has been kept, prevent the influence of the size of sleeve pipe atmospheric pressure to the plunger. Simultaneously, the lower extreme at the injection jar has connected the interpolation pipe to set up the check valve on adding the pipe, be convenient for add the medicament to the jar body.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural view of a drug injection device provided by the present invention.
Fig. 2 is a cross-sectional view of a schematic structural view of a drug injection device provided in the present invention.
Figure 3 is a cross-sectional view of the piston body of the canister in an upper position.
Figure 4 is a cross-sectional view of the canister with the piston body removed.
In the figure, 1-wellhead casing valve seat body, 2-oil pipe, 3-oil pipe valve seat body, 4-packing box, 5-medicine injection tank, 51-cylindrical tank body, 52-upper cover, 53-piston body, 54-counterweight block, 55-balance pipe, 56-injection pipe, 57-addition pipe and 6-polish rod.
Detailed Description
Fig. 1 is a schematic structural view of the medicine injection device provided by the present invention. Fig. 2 is a cross-sectional view of the structure of the drug injection device according to the present invention. Figure 3 is a cross-sectional view of the piston body of the canister in an up position. Figure 4 is a cross-sectional view of the canister with the piston body removed. As shown in the figure, the medicine injection device suitable for the high-pressure environment of the oil well casing is arranged on a wellhead Christmas tree of the oil well, the wellhead Christmas tree of the oil well sequentially comprises a wellhead casing valve seat body 1, a tubing valve seat body 3 and a packing box 4 from bottom to top, the wellhead casing valve seat body 1 is communicated with an annulus between an oil pipe 2 and a casing pipe, the tubing valve seat body 3 is communicated with the oil pipe 2, and a polish rod 6 is sealed by the packing box 4. The wellhead Christmas tree is provided with a medicine injection tank 5, the medicine injection tank 5 comprises a cylindrical tank body 51 and an upper cover 52 arranged at the upper end of the cylindrical tank body 51, a piston body 53 capable of axially sliding along the cylindrical tank body 51 is arranged in the cylindrical tank body 51, a sealing ring is arranged between the piston body 53 and the cylindrical tank body 51, and a detachable balancing weight 54 is arranged above the piston body 51.
The cylindrical tank body 51 is positioned below the piston body 53 and contains a medicament to be injected into an annular space between an oil pipe 2 and a casing of an oil well, the upper cover 52 of the cylindrical tank body 51 is connected with a balance pipe 55, the other end of the balance pipe 55 is connected to the wellhead casing valve seat body 1 and is communicated with the annular space between the oil pipe 2 and the casing, and the balance pipe 55 is provided with a one-way valve only allowing the medicament to flow into the cylindrical tank body 51. The lower end of the cylindrical tank body 51 is connected with an injection pipe 56, the other end of the injection pipe 56 is connected with the casing valve seat body 1 and communicated with the annulus between the oil pipe 2 and the casing, and the injection pipe 56 is provided with a one-way valve which only allows the oil to flow out of the cylindrical tank body 51; an addition pipe 57 for adding a chemical to the lower side of the piston body 53 of the cylindrical can 51 is provided at the lower end of the cylindrical can 51, and the addition pipe 57 is provided with a check valve for allowing only the flow into the cylindrical can 51.
Claims (5)
1. Be suitable for oil well sleeve pipe high pressure environment's injection device, set up on the well head christmas tree of oil well, the well head christmas tree of oil well includes well head casing valve pedestal (1), tubing valve pedestal (3) and packing box (4) by going up in proper order, well head casing valve pedestal (1) is linked together with the annular space between oil pipe (2) and the sleeve pipe, tubing valve pedestal (3) are linked together with oil pipe (2), and polished rod (6) are sealed by packing box (4), be provided with injection jar (5), its characterized in that on the well head christmas tree: the drug injection tank (5) comprises a cylindrical tank body (51) and an upper cover (52) arranged at the upper end of the cylindrical tank body (51), a piston body (53) capable of axially sliding along the cylindrical tank body (51) is arranged in the cylindrical tank body (51), a sealing ring is arranged between the piston body (53) and the cylindrical tank body (51), and a detachable balancing weight (54) is arranged above the piston body (53); the cylindrical tank body (51) is positioned below the piston body (53) and is used for containing a medicament to be injected into an annulus between an oil pipe (2) and a casing of an oil well, an upper cover (52) of the cylindrical tank body (51) is connected with a balance pipe (55), the other end of the balance pipe (55) is connected to a wellhead casing valve seat body (1) and is communicated with the annulus between the oil pipe (2) and the casing, and a check valve only allowing the medicament to flow into the cylindrical tank body (51) is arranged on the balance pipe (55); the lower end of the cylindrical tank body (51) is connected with an injection pipe (56), the other end of the injection pipe (56) is connected with a wellhead casing valve seat body (1) and communicated with an annulus between the oil pipe (2) and a casing, and the injection pipe (56) is provided with a one-way valve which only allows the oil to flow out of the cylindrical tank body (51); an adding pipe (57) for adding the medicine to the lower part of the piston body (53) of the cylindrical tank body (51) is arranged at the lower end of the cylindrical tank body (51), and the adding pipe (57) is provided with a one-way valve only allowing the medicine to flow into the cylindrical tank body (51).
2. The apparatus of claim 1 for injecting chemicals for use in an oil well casing high pressure environment, wherein: the upper cover (52) of the cylindrical tank body (51) is connected with a pressure gauge for displaying the pressure above the piston body (53) in the cylindrical tank body (51).
3. The apparatus of claim 1 for injecting chemicals for use in an oil well casing high pressure environment, wherein: the lower end of the cylindrical tank body (51) is connected with a pressure gauge for displaying the pressure below a piston body (53) in the cylindrical tank body (51).
4. The apparatus of claim 1 for injecting chemicals for use in an oil well casing high pressure environment, wherein: the upper cover (52) is fastened to the upper end of the cylindrical tank (51) by bolts.
5. The apparatus for injecting chemicals adapted for use in a high pressure environment of an oil well casing according to any one of claims 1 to 4, wherein: the wellhead Christmas tree is provided with a support for supporting the injection tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920974698.5U CN210738538U (en) | 2019-06-26 | 2019-06-26 | Medicine injection device suitable for high-pressure environment of oil well casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920974698.5U CN210738538U (en) | 2019-06-26 | 2019-06-26 | Medicine injection device suitable for high-pressure environment of oil well casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210738538U true CN210738538U (en) | 2020-06-12 |
Family
ID=71008026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920974698.5U Expired - Fee Related CN210738538U (en) | 2019-06-26 | 2019-06-26 | Medicine injection device suitable for high-pressure environment of oil well casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210738538U (en) |
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2019
- 2019-06-26 CN CN201920974698.5U patent/CN210738538U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210910 Address after: 163000 rooms 706 and 707, block C1, C2 and C3, Service Outsourcing Industrial Park, No. 6-1, Xinfeng Road, high tech Zone, Daqing City, Heilongjiang Province Patentee after: DAQING XINSHUNFENG PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 257000 No.45, Beizhu village, Fenghuang community, Lijin County, Dongying City, Shandong Province Patentee before: Zhu Junting |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200612 |