CN217106980U - Single-loop hydrofracturing ground stress test pressure relief device - Google Patents
Single-loop hydrofracturing ground stress test pressure relief device Download PDFInfo
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- CN217106980U CN217106980U CN202122057579.3U CN202122057579U CN217106980U CN 217106980 U CN217106980 U CN 217106980U CN 202122057579 U CN202122057579 U CN 202122057579U CN 217106980 U CN217106980 U CN 217106980U
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Abstract
The utility model relates to a single circuit hydrofracturing ground stress test release device. When the pressure difference of the drilling water level causes the blockage of the single-loop hydrofracturing ground stress equipment, a large amount of time is wasted by using the conventional fishing method, and the hydrofracturing ground stress equipment is extremely easy to damage. The device comprises a circular tube-shaped water lifting cylinder; the upper end of the water lifting cylinder is provided with an upper joint, the center of the upper joint is provided with a round hole, and the upper joint is connected with a hanging ring for dragging; the lower end of the water lifting cylinder is provided with a lower joint, the lower joint is connected with a conical hollowed support bottom, and a steel ball is arranged in the conical hollowed support bottom; the bottom of the conical hollow support bottom is provided with a hole, and the diameter of the hole is smaller than that of the steel ball. Based on the utility model discloses, can be under the condition of effective protection test equipment safety, the downthehole water pressure difference of effective processing causes ground stress equipment card to hinder the problem, accomplishes single loop hydrofracturing ground stress test work, device simple structure, and equipment is light, and is easy and simple to handle.
Description
Technical Field
The utility model relates to a geophysical prospecting equipment, concretely relates to single loop hydrofracturing ground stress test release device.
Background
When the single-loop hydrofracturing ground stress is carried out in a drilling process, the blocking of the single-loop hydrofracturing ground stress device cannot be promoted due to the fact that the water level of the drilling hole is low, and the reason is mainly due to the fact that pressure difference exists between the drilling hole without well fluid and the single-loop hydrofracturing ground stress testing device which is placed down while drilling. When a hydrofracturing ground stress test is carried out, a drilling tool needs to be filled with water, and a gap between the drilling tool and a hole wall is in a well fluid-free state, so that obvious pressure difference is formed between the inside and the outside of the drilling tool, water in the drilling tool is pressed to enter a packer through a push-pull switch, and the packer is tightly attached to the well wall and cannot be lifted after being expanded. Therefore, the borehole water head problem often results in the loss of single-circuit hydrofracturing ground stress testing equipment.
When the single-loop hydrofracturing ground stress equipment is blocked due to the difference of the water levels of the drill holes and a conventional fishing method is used, a large amount of time is wasted on the site, the hydrofracturing ground stress equipment is extremely easy to damage, and the fishing success rate is extremely low.
Disclosure of Invention
The utility model aims at providing a single loop hydraulic fracturing ground stress test release device can effectively handle downthehole water pressure difference and cause ground stress equipment jamming problem, improves the site operation efficiency, and can guarantee the equipment security, avoids damaging.
In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:
the utility model provides a single loop hydrofracturing ground stress test release device which characterized in that:
the pressure relief device comprises a circular tube-shaped water lifting cylinder;
the upper end of the water lifting cylinder is provided with an upper joint, the center of the upper joint is provided with a round hole, and the upper joint is connected with a hanging ring for dragging;
the lower end of the water lifting cylinder is provided with a lower joint, the lower joint is connected with a conical hollowed support bottom, and a steel ball is arranged in the conical hollowed support bottom; the bottom of the conical hollow support bottom is provided with a hole, and the diameter of the hole is smaller than that of the steel ball.
The water lifting cylinder comprises an upper section and a lower section which are respectively an upper water lifting cylinder and a lower water lifting cylinder, and the upper water lifting cylinder and the lower water lifting cylinder are connected through a middle joint.
The bottom of an upper portion water lifting cylinder and the top of a lower part water lifting cylinder all are provided with the internal thread, and well joint is the connecting pipe that has the external screw thread, and an upper portion water lifting cylinder and a lower part water lifting cylinder connect with well joint threaded connection respectively from well joint both ends, constitute a water lifting cylinder.
The top connection is circular tube cap, has the internal thread, and the top of upper portion water lifting barrel has the external screw thread, and the top connection is from the top and the upper portion water lifting barrel threaded connection of upper portion water lifting barrel.
The link is semicircle annular, and both ends are connected to the outer wall of top connection.
The lower joint is a connecting pipe with an external thread, the bottom end of the lower water lifting cylinder is provided with an internal thread, the top end of the conical hollowed support bottom is provided with an internal thread, and after the conical hollowed support bottom is in threaded connection with the lower joint, the lower joint is in threaded connection with the lower water lifting cylinder.
The conical hollow support base is of a conical tube structure, and the diameter of the top of the conical hollow support base is larger than that of the bottom of the conical hollow support base.
Compared with the prior art, the beneficial effects of the utility model are as follows:
will the utility model relates to a release device top link is connected to on the drill site hoist, then transfers it to in the drilling tool of being full of water, and release device is getting into the inside water pressure of drilling tool behind the water level and can push away release device bottom toper fretwork department steel ball, and water can enter into in the release device rapidly. And after the pressure relief device completely enters the water level, the winch is stably hoisted for a plurality of seconds, the jacked steel balls are waited to fall back to the conical hollowed-out part at the bottom of the pressure relief device, and then the pressure relief device is quickly lifted out in a mud pit of a drilling site and jacked by the steel drill rods to release the steel balls to release water in the pressure relief device. And repeatedly using the pressure relief device to relieve pressure until the pressure difference inside and outside the packer becomes small, and completing the single-loop hydrofracturing ground stress testing pressure relief work.
Based on the utility model discloses, can accomplish single loop hydrofracturing ground stress test work under the condition of effective protection test equipment safety. The device has the characteristics of simple structure, light equipment, simple and convenient operation and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, drawings of other embodiments can be obtained according to the drawings without creative efforts.
Fig. 1 is a view showing the upper view angle of the present invention.
Fig. 2 is a view of the lower view of the present invention.
The labels in the figure are:
1-hanging ring, 2-upper joint, 3-upper water lifting cylinder, 4-middle joint, 5-lower water lifting cylinder, 6-lower joint, 7-conical hollowed-out bottom support and 8-steel ball.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The utility model provides a single circuit hydraulic fracturing ground stress test release device, including a water drum that carries of pipe form. An upper joint 2 is arranged at the upper end of the water lifting cylinder, a round hole is arranged at the center of the upper joint 2, and a hanging ring 1 for dragging is connected to the upper joint 2. The lower end of the water lifting cylinder is provided with a lower joint 6, the lower joint 6 is connected with a conical hollowed support bottom 7, and a steel ball 8 is arranged in the conical hollowed support bottom 7. The bottom of the conical hollowed support bottom 7 is provided with a hole, the diameter of the hole is smaller than that of the steel ball 8, the steel ball 8 can be clamped at the bottom hole of the conical hollowed support bottom 7 at the bottom end of the pressure relief device, and the conical hollowed support bottom 7 can be bounced by water pressure after entering a water surface, wherein the steel ball 8 inside the conical hollowed support bottom 7 can be bounced by water pressure.
The top hanging ring 1 of the pressure relief device is connected to a steel wire rope or a chain of a winch and then is placed into a drilling tool filled with water, after the pressure relief device enters a water surface, the water pressure in the drilling tool can push open steel balls 8 in a conical hollowed support bottom 7 at the bottom of the pressure relief device, and water can rapidly enter a water lifting barrel of the pressure relief device from an opening at the bottom of the conical hollowed support bottom 7. After the pressure relief device completely enters the water level, the winch is stabilized to be static for several seconds, the jacked steel balls 8 are waited to descend into the conical hollowed support bottom 7 at the bottom of the pressure relief device and fall into the bottom opening of the conical hollowed support bottom 7, and then the pressure relief device is rapidly lifted out to jack the steel balls 8 to release water in the pressure relief device by the steel rods in a mud pit of a drilling site. And repeatedly using the pressure relief device to relieve pressure until the pressure difference inside and outside the packer becomes small, and completing the single-loop hydrofracturing ground stress testing pressure relief work.
The water lifting cylinder of the pressure relief device comprises an upper section and a lower section, wherein the upper section is a water lifting cylinder 3, the lower section is a water lifting cylinder 5, and the upper section is a water lifting cylinder 3, and the lower section is a water lifting cylinder 5 which are connected through a middle joint 4. The bottom of a water section of thick bamboo 3 is carried on upper portion and the top of a water section of thick bamboo 5 is carried on the lower part all is provided with the internal thread, and well joint 4 is the connecting pipe that has the external screw thread, and a water section of thick bamboo 3 is carried on upper portion and a water section of thick bamboo 5 is carried on the lower part from the 4 both ends of well joint respectively with well 4 threaded connection, constitute and carry a water section of thick bamboo. According to the requirement of length, the water lifting bucket can also be divided into more than two sections, so that the disassembly, transportation and field assembly are facilitated, and only one section can be arranged when the requirement of length is short.
The top connection 2 is a circular pipe cover and is provided with an internal thread, the top end of the upper water lifting cylinder 3 is provided with an external thread, and the top connection 2 is connected with the upper water lifting cylinder 3 in a threaded manner from the top end of the upper water lifting cylinder 3. The suspension loop 1 is in a semicircular ring shape, and two ends of the suspension loop are connected to the outer wall of the upper joint 2. The steel ball 8 is arranged in the water lifting cylinder from the opening on the top of the upper joint 2. And because the top of the upper joint 2 is provided with the hole, negative pressure cannot be formed after water in the drilling tool enters the water lifting cylinder.
The utility model discloses an on-the-spot operation process as follows:
in field work, when a certain section of a hydrofracturing ground stress test falls, the drilling tool needs to be filled with water, and a gap between the drilling tool and a hole wall is in a well fluid-free state, so that obvious pressure difference is formed inside and outside the drilling tool, water in the drilling tool is pressed to enter the packer through the push-pull switch, and the packer is expanded and then is tightly attached to the well wall and cannot be lifted. The top suspension loop 1 of the pressure relief device is connected to a winch of a drilling site, then the pressure relief device is placed into a drilling tool filled with water, after the pressure relief device enters the water surface, the water pressure in the drilling tool can push open steel balls 8 in a conical hollow support bottom 7, and water can rapidly enter the pressure relief device. And (3) stabilizing the winch for a plurality of seconds after the pressure relief device completely enters the water level, waiting for the jacked steel balls 8 to fall back to the conical hollowed support bottom 7, and then quickly lifting the pressure relief device out to jack the steel balls 8 by using a steel drill for a mud pit of a drilling site to release water in the pressure relief device. And repeatedly using the pressure relief device to relieve pressure until the pressure difference inside and outside the packer becomes small, and completing the single-loop hydrofracturing ground stress testing pressure relief work.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical personnel in the technical field of the utility model, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replace.
Claims (7)
1. The utility model provides a single loop hydrofracturing ground stress test release device which characterized in that:
the pressure relief device comprises a circular tube-shaped water lifting cylinder;
an upper joint (2) is arranged at the upper end of the water lifting cylinder, a round hole is formed in the center of the upper joint (2), and a hanging ring (1) for dragging is connected to the upper joint (2);
the lower end of the water lifting cylinder is provided with a lower joint (6), the lower joint (6) is connected with a conical hollowed support bottom (7), and a steel ball (8) is arranged in the conical hollowed support bottom (7); the bottom of the conical hollow support bottom (7) is provided with a hole, and the diameter of the hole is smaller than that of the steel ball (8).
2. The single-circuit hydraulic fracturing ground stress test pressure relief device of claim 1, wherein:
the water lifting cylinder comprises an upper section and a lower section, the upper section is a water lifting cylinder (3), the lower section is a water lifting cylinder (5), and the upper section is connected with the lower section through a middle joint (4), and the upper section is a water lifting cylinder (3).
3. The single-circuit hydraulic fracturing ground stress testing and pressure relief device of claim 2, wherein:
the bottom of a water section of thick bamboo (3) is carried on upper portion and the top of a water section of thick bamboo (5) is carried on the lower part all is provided with the internal thread, and well joint (4) are the connecting pipe that has the external screw thread, and a water section of thick bamboo (3) is carried on upper portion and a water section of thick bamboo (5) is carried on the lower part from well joint (4) both ends respectively with well joint (4) threaded connection, constitute and carry a water section of thick bamboo.
4. The single-circuit hydraulic fracturing ground stress test pressure relief device of claim 3, wherein:
the upper joint (2) is a circular pipe cover and is provided with an internal thread, the top end of the upper water lifting cylinder (3) is provided with an external thread, and the upper joint (2) is in threaded connection with the upper water lifting cylinder (3) from the top end of the upper water lifting cylinder (3).
5. The single-circuit hydraulic fracturing ground stress test pressure relief device of claim 4, wherein:
the hanging ring (1) is in a semicircular ring shape, and two ends of the hanging ring are connected to the outer wall of the upper joint (2).
6. The single-circuit hydraulic fracturing ground stress test pressure relief device of claim 5, wherein:
the lower joint (6) is a connecting pipe with an external thread, the bottom end of the lower water lifting cylinder (5) is provided with an internal thread, the top end of the conical hollowed support bottom (7) is provided with an internal thread, and after the conical hollowed support bottom (7) is in threaded connection with the lower joint (6), the lower joint (6) is in threaded connection with the lower water lifting cylinder (5).
7. The single-circuit hydraulic fracturing ground stress test pressure relief device of claim 6, wherein:
the conical hollow support bottom (7) is of a conical tube structure, and the diameter of the top is larger than that of the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122057579.3U CN217106980U (en) | 2021-08-30 | 2021-08-30 | Single-loop hydrofracturing ground stress test pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122057579.3U CN217106980U (en) | 2021-08-30 | 2021-08-30 | Single-loop hydrofracturing ground stress test pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217106980U true CN217106980U (en) | 2022-08-02 |
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ID=82576954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122057579.3U Active CN217106980U (en) | 2021-08-30 | 2021-08-30 | Single-loop hydrofracturing ground stress test pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217106980U (en) |
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2021
- 2021-08-30 CN CN202122057579.3U patent/CN217106980U/en active Active
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