CN212927773U - Multifunctional injection-production wellhead device for dry hot rock development - Google Patents
Multifunctional injection-production wellhead device for dry hot rock development Download PDFInfo
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- CN212927773U CN212927773U CN202021595981.6U CN202021595981U CN212927773U CN 212927773 U CN212927773 U CN 212927773U CN 202021595981 U CN202021595981 U CN 202021595981U CN 212927773 U CN212927773 U CN 212927773U
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Abstract
A multifunctional injection and production wellhead device for hot dry rock development comprises a first connecting device and a second connecting device; the first connecting device comprises a first pipe body, a first channel is arranged in the first pipe body, first branches are respectively arranged on two sides of the first pipe body, the first channel comprises a first section at the top and a second section at the bottom, a hanger is arranged in the first section, the hanger comprises a body, and a vertical connecting channel is arranged in the hanger; the middle part of the body is fixedly provided with a convex ring body, and the ring body is connected with the inner wall of the first section through threads; the bottom end of the connecting channel is connected with a sleeve; the top of the first pipe body is provided with a detachable cover plate, the cover plate is provided with a water outlet channel, the water outlet channel comprises a third section at the top and a fourth section at the bottom, and the top of the hanger is connected with the inner wall of the fourth section through threads; the second connecting device comprises a second pipe body, a second channel is arranged in the second pipe body, and the bottom end of the second channel is connected with the top end of the third section through a pipeline with a main valve.
Description
Technical Field
The utility model belongs to the technical field of geothermal development machinery, especially a multi-functional notes of hot dry rock development are adopted well head device.
Background
Hot dry rock is an emerging geothermal resource, and lithology is usually granite. The development of hot dry rock needs to establish an enhanced geothermal system, namely a circulation system among multiple wells, and the deep geothermal energy is brought to the ground by using water injection and extraction to perform thermoelectric conversion so as to be utilized.
The development means of the hot dry rock is similar to the development of petroleum. But based on the characteristics of hot dry rock development, ordinary oil recovery well head can not satisfy the needs of hot dry rock resource development, mainly reflects in: firstly, a common well head is difficult to bear higher working pressure under the working condition of high-temperature fluid generated by water injection and production of an enhanced geothermal system, so that a circulating system cannot operate or the efficiency is too low; the over-small well head can not adapt to the requirement of large-flow water circulation, and meanwhile, the implementation of adjusting procedures such as testing and downhole operation by using tools such as coiled tubing and the like in the development process is limited; the existing wellhead structure is inconvenient when a measuring tool with a cable is put in, is not beneficial to parameter monitoring, and is easy to cause construction accidents.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model aims at providing a multi-functional notes of hot dry rock development are adopted well head device, its construction, monitoring and test of being convenient for in the hot dry rock development process can satisfy the needs of the experimental development construction of hot dry rock, monitoring and process adjustment.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a multifunctional injection and production wellhead device for hot dry rock development comprises a first connecting device and a second connecting device which are connected with each other;
the first connecting device comprises a first pipe body, a first channel is arranged in the first pipe body, first branches are respectively arranged on two sides of the first pipe body, the first branches are vertically communicated with the first channel, and the tail ends of the first branches are connected with a pipeline with a first valve; the first channel comprises a first section at the top and a second section at the bottom, the diameter of the first section is larger than that of the second section; a hanger is arranged in the first section, and comprises a tubular body, and a vertical connecting channel is arranged in the hanger; the middle part of the body is fixedly provided with a convex ring body, and the ring body is connected with the inner wall of the first section through threads; the bottom end of the connecting channel is connected with a sleeve; the top of the first pipe body is provided with a detachable cover plate, the cover plate is provided with a water outlet channel, the water outlet channel comprises a third section at the top and a fourth section at the bottom, and the diameter of the fourth section is larger than that of the third section; the top of the hanger is connected with the inner wall of the fourth section through threads;
the second connecting device comprises a second pipe body, a second channel is arranged in the second pipe body, second branches are respectively arranged on two sides of the second pipe body, the second branches are vertically communicated with the second channel, and the tail ends of the second branches are connected with a pipeline with a second valve; the bottom end of the second channel is connected with the top end of the third section through a pipeline with a main valve, and the top end of the second channel is connected with a pipeline with a third valve.
Furthermore, the ring body of hanger is equipped with vertical first cable hole, the apron is equipped with the second cable hole of slope corresponding to the position of first cable hole.
Furthermore, the first cable hole and the second cable hole are four, and the phase angle is 45 degrees, 135 degrees and 135 degrees in sequence.
Furthermore, the inner diameter of the opening at the two ends of the connecting channel is gradually increased outwards.
Further, the first connecting device and the second connecting device are made of high-temperature-resistant materials, the performance grade is PR1, the specification grade is PSL2, and the material grade is DD materials.
Further, the first connecting device is provided with a temperature sensor and a pressure sensor.
The utility model has the advantages that:
(1) the utility model improves the temperature resistance of the well mouth, so that the well mouth can work for a long time at rated pressure at high temperature, and the requirement of dry and hot rock resource development is met;
(2) the main drift diameter, the bypass drift diameter and the first connecting device drift diameter of the wellhead device of the utility model are widened, so that the injection and production water flow can be increased, the heat exchange speed and the thermoelectric conversion speed are improved, and meanwhile, the drift diameter with large size can meet the requirement of further testing or measuring of a lower coiled tubing or a downhole tool;
(3) the opening on the hanger of the utility model can meet the passing of cables of various types, thereby facilitating the measurement tool to carry the cable to enter the underground, and increasing the reliability and safety of construction;
(4) the utility model discloses well head device has the function of positive and negative well-flushing concurrently, conveniently carries out the pit shaft and handles.
Drawings
Fig. 1 is the structural schematic diagram of the multifunctional injection-production wellhead device for dry and hot rock development of the utility model.
Fig. 2 is the structural schematic diagram of the first pipe body of the multifunctional injection-production wellhead device for dry hot rock development.
Fig. 3 is the structural schematic diagram of the hanger of the multifunctional injection-production wellhead device for dry hot rock development of the utility model.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the utility model provides a multi-functional notes of hot dry rock development are adopted well head device, including interconnect's first connecting device 1 and second connecting device 2. The first connecting device 1 and the second connecting device 2 are made of high-temperature-resistant materials, the performance grade is PR1, the specification grade is PSL2, and the material grade is DD materials, so that the rated working temperature and the rated working pressure at high temperature are greatly improved.
As shown in fig. 1 and 2, the first connecting device 1 includes a first pipe 11, a first channel 12 is disposed inside the first pipe 11, first branches 13 are disposed on two sides of the first pipe 11, and the first branches 13 are vertically connected to the first channel 12 and connected to a pipeline having a first valve 14 at the end.
As shown in fig. 2 and 3, the first channel 12 includes a first section 121 at the top and a second section 122 at the bottom, and the diameter of the first section 121 is larger than that of the second section 122. The first segment 121 is provided with a hanger 3, the hanger 3 comprises a tubular body 31, a vertical connecting channel 32 is arranged inside the tubular body, and the bottom end of the connecting channel 32 is connected with a sleeve 33. The inner diameter of the opening at both ends of the connecting passage 32 is gradually increased outward to facilitate the connection of the sleeve 33. An outward protruding ring 34 is fixed in the middle of the body 31, and the ring 34 is connected with the inner wall of the first section 121 through a screw thread.
As shown in fig. 1, a detachable cover plate 15 is disposed on the top of the first tube 11, the cover plate 15 is provided with a water outlet channel 16, the water outlet channel 16 includes a third section 161 on the top and a fourth section 162 on the bottom, and the diameter of the fourth section 162 is larger than that of the third section 161. The top of the hanger 3 is threadedly coupled to the inner wall of the fourth segment 162.
As shown in fig. 1, the second connecting device 2 includes a second pipe 21, a second channel is provided inside the second pipe 21, and second branches are respectively provided at two sides of the second pipe 21 and vertically communicate with the second channel and are connected to a pipeline with a second valve 22 at the end. The bottom end of the second passage is connected to the top end of the third section 161 via a line with a main valve 23, and the top end of the second passage is connected to a line with a third valve 24.
As shown in fig. 1, the ring body 34 of the hanger 3 is provided with a vertical first cable hole 35, and the cover plate 15 is provided with an inclined second cable hole 17 at a position corresponding to the first cable hole 35 to facilitate the cable to pass through. Further, the first cable hole 35 and the second cable hole 17 are four, and the phase angles are 45 degrees, 135 degrees and 135 degrees in sequence, specifically, in the embodiment, one on the left side and three on the right side, the left opening and the right middle opening are symmetrically distributed, and the phase angle between two adjacent openings on the right side is 45 degrees.
As shown in fig. 1, the first connecting device 1 is provided with a temperature sensor 4 and a pressure sensor 5.
The utility model discloses when using, through the production of second connecting device 2 and connection structure control and regulation hot dry rock well, through 1 control positive, reverse circulation well-flushing of first connecting device, observe sleeve pipe pressure and through the operation that the oil jacket space goes on. Coiled tubing testing or downhole gauging operations may be performed by a removable cover plate structure in combination with a gauging tool or coiled tubing. The utility model discloses main latus rectum, other latus rectum, first connecting device latus rectum widen the back, can increase the notes and adopt the water yield, ground pipeline and 2 both sides interface connections of second connecting device, by flow controller control flow, the passageway inflow or the outflow that water passes through second connecting device 2, main valve door, sleeve pipe and constitutes. And injecting water from the upper end of the sleeve or a channel of the bypass diameter connecting flat valve according to needs during positive and negative well washing, and extracting from the other end. 3 both sides of hanger have carried out the trompil, and when the measuring instrument of electrified cable was gone into down, the sensor went into down from middle latus rectum, and the cable passed the trompil and transfers in step with the measuring instrument and be under construction, and the threading process is realized through dismantling hanger 3. The drift diameter of the first connecting device 1 meets the requirement of running in the coiled tubing, and the upper end of the first connecting device is connected with coiled tubing equipment when the coiled tubing is tested, so that the coiled tubing test can be carried out.
The utility model discloses multi-functional notes of hot dry rock development are adopted well head device mainly is actual to the production of hot dry rock geothermal resources development, for realizing that the process such as hot dry rock notes well shaft is handled, process test, parameter acquisition, production and a special well head that designs. By adopting a high-grade temperature-resistant material, the high-grade heat-resistant material has certain pressure-bearing capacity at high temperature, and can meet the working condition of generating high-temperature fluid in hot dry rock water injection development; the main drift diameter, the bypass drift diameter and the drift diameter of the first connecting device of the wellhead are optimized and widened, so that the circulation of high-flow injection and production water can be realized, the heat exchange rate is improved, and the requirement of underground testing can be met; in addition, the production test device can meet the requirements of production tests of running cable tools and coiled tubing with various sizes. Meanwhile, the well mouth with the increased drift diameter can realize the water injection and production operation with larger flow rate under the rated working pressure, and the heat exchange rate is improved. And cable holes with different sizes are designed on two sides of the hanger, so that a measuring instrument or a sensor is supported to carry a cable to go into a well to measure parameters.
It should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and the purpose is to make those skilled in the art better understand the present invention, and should not be used to limit the scope and application of the present invention, and any modification, equivalent replacement, improvement, etc. made within the spirit or principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The multifunctional injection and production wellhead device for the development of the hot dry rock is characterized by comprising a first connecting device and a second connecting device which are connected with each other;
the first connecting device comprises a first pipe body, a first channel is arranged in the first pipe body, first branches are respectively arranged on two sides of the first pipe body, the first branches are vertically communicated with the first channel, and the tail ends of the first branches are connected with a pipeline with a first valve; the first channel comprises a first section at the top and a second section at the bottom, the diameter of the first section is larger than that of the second section; a hanger is arranged in the first section, and comprises a tubular body, and a vertical connecting channel is arranged in the hanger; the middle part of the body is fixedly provided with a convex ring body, and the ring body is connected with the inner wall of the first section through threads; the bottom end of the connecting channel is connected with a sleeve; the top of the first pipe body is provided with a detachable cover plate, the cover plate is provided with a water outlet channel, the water outlet channel comprises a third section at the top and a fourth section at the bottom, and the diameter of the fourth section is larger than that of the third section; the top of the hanger is connected with the inner wall of the fourth section through threads;
the second connecting device comprises a second pipe body, a second channel is arranged in the second pipe body, second branches are respectively arranged on two sides of the second pipe body, the second branches are vertically communicated with the second channel, and the tail ends of the second branches are connected with a pipeline with a second valve; the bottom end of the second channel is connected with the top end of the third section through a pipeline with a main valve, and the top end of the second channel is connected with a pipeline with a third valve.
2. The hot dry rock development multifunctional injection and production wellhead device as claimed in claim 1, wherein: the ring body of hanger is equipped with vertical first cable hole, the apron is equipped with the second cable hole of slope corresponding to the position in first cable hole.
3. The hot dry rock development multifunctional injection and production wellhead device as claimed in claim 2, wherein: the first cable hole and the second cable hole are four, and the phase angle is 45 degrees, 135 degrees in proper order.
4. The hot dry rock development multifunctional injection and production wellhead device as claimed in claim 1, wherein: the inner diameters of the openings at the two ends of the connecting channel are gradually increased outwards.
5. The hot dry rock development multifunctional injection and production wellhead device as claimed in claim 1, wherein: the first connecting device and the second connecting device are made of high-temperature-resistant materials, the performance grade is PR1, the specification grade is PSL2, and the material grade is DD materials.
6. The hot dry rock development multifunctional injection and production wellhead device as claimed in claim 1, wherein: the first connecting device is provided with a temperature sensor and a pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021595981.6U CN212927773U (en) | 2020-08-04 | 2020-08-04 | Multifunctional injection-production wellhead device for dry hot rock development |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021595981.6U CN212927773U (en) | 2020-08-04 | 2020-08-04 | Multifunctional injection-production wellhead device for dry hot rock development |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212927773U true CN212927773U (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021595981.6U Expired - Fee Related CN212927773U (en) | 2020-08-04 | 2020-08-04 | Multifunctional injection-production wellhead device for dry hot rock development |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212927773U (en) |
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2020
- 2020-08-04 CN CN202021595981.6U patent/CN212927773U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210409 Termination date: 20210804 |
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| CF01 | Termination of patent right due to non-payment of annual fee |