CN210714682U - Formation pressure testing device based on drilling while drilling - Google Patents
Formation pressure testing device based on drilling while drilling Download PDFInfo
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- CN210714682U CN210714682U CN201921138646.0U CN201921138646U CN210714682U CN 210714682 U CN210714682 U CN 210714682U CN 201921138646 U CN201921138646 U CN 201921138646U CN 210714682 U CN210714682 U CN 210714682U
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- 238000005553 drilling Methods 0.000 title claims abstract description 47
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- 239000012530 fluid Substances 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
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- 238000011161 development Methods 0.000 description 3
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- 238000011156 evaluation Methods 0.000 description 1
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Abstract
The utility model provides a formation pressure testing arrangement based on well drilling while drilling, include: drill bit (1), backward flow restriction valve (2), formation pressure tester (3) and drilling rod (4), wherein: the two ends of the backflow limiting valve (2) are respectively connected with the drill bit (1) and the ground pressure tester (3), the ground pressure tester (3) is connected with the drill rod (4), and the ground pressure tester (3) comprises: a hydraulic pump (7), a probe (8), a balance valve (9), a pressure sensor (10) and a fluid line (11); wherein the fluid lines (11) connect the probe (8), the hydraulic pump (7), the pressure sensor (10) and the balancing valve (9). The device provided by the utility model can not receive the influence in-process that mud invaded in the stratum, carry out the pressure test to can reflect original formation pressure.
Description
Technical Field
The utility model belongs to the technical field of oil gas field development, especially oil gas well data measurement, concretely relates to formation pressure testing arrangement based on well drilling while drilling.
Background
Formation pressure, i.e., formation pore pressure, refers to the pressure acting on the fluid within the pores of the formation. Only by mastering the accurate stratum pressure, the well structure, the drilling fluid density, the adopted wellhead device and the drilling construction measures can be accurately determined, and an important guiding function is played on the production working system and the fracturing design of the oil-gas well. With the continuous development of oil and gas resource industry in China, most oil fields enter the middle and later stages of exploration and development, stratum conditions become more and more complex, and accurate stratum pressure can be obtained, so that the success of well drilling and the yield increase of oil and gas wells in the later stages are important guarantees.
The logging while drilling data is measured before the mud filtrate invades the stratum or when the invasion is shallow, so that the geological characteristics of the undisturbed stratum can be reflected more truly, and the accuracy of stratum evaluation can be improved. The current formation pressure test is performed in a well bore which is completed and is completed by a cable or a storage type pressure tester, and the problems are as follows:
1) the geological features of the undisturbed stratum cannot be truly reflected. After completion of the well the mud filtrate has invaded the formation and the formation geology has changed.
2) Construction presents a certain degree of danger. Due to the restriction of conditions such as well conditions and the like, for example, the danger of collapse of a well wall exists, the traditional testing method is difficult to send the electronic pressure measuring device into a target layer position through a cable, and a pressure tester is easy to damage, so that certain difficulty and danger are caused for formation pressure testing.
Therefore, how to provide a formation pressure testing device which can reflect the original geological characteristics of the formation and can be safely constructed is an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a formation pressure testing arrangement based on well drilling along with boring can not receive the influence in-process that mud invaded in the stratum, carries out pressure test to can reflect original formation pressure, on the other hand, because the formation pressure testing arrangement that this embodiment provided can not receive the influence of well condition, reduced the harm to the instrument.
In order to achieve the above object, the embodiment of the utility model provides a formation pressure testing arrangement based on well drilling while drilling, the repacking is put and is included: drill bit, backward flow restriction valve, formation pressure tester and drilling rod, wherein:
and two ends of the backflow limiting valve are respectively connected with the drill bit and the ground pressure tester, and the ground pressure tester is connected with the drill rod.
The formation pressure tester comprises: a hydraulic pump, a probe, a balance valve, a pressure sensor and a fluid line; wherein the fluid lines connect the probe, the hydraulic pump, the pressure sensor, and the balancing valve.
In one embodiment, the formation pressure testing device based on drilling while drilling further comprises: and the supporting arm is arranged on the ground pressure tester.
In one embodiment, the formation pressure testing device based on drilling while drilling further comprises: and the pressure packers are arranged on the drill pipes at two ends of the formation pressure tester.
In one embodiment, a sealing foot pad and a filter screen are arranged inside the probe.
In one embodiment, the formation pressure tester is connected to the backflow limiting valve by a stud nut and a stud bolt.
In one embodiment, the support arm comprises: the hydraulic device comprises a force arm, a supporting block and a hydraulic device connecting piece, wherein one end of the force arm is connected with the supporting block, and the other end of the force arm is connected with the hydraulic device; the probe, the axis of the drill rod and the supporting block are located on the same plane.
In one embodiment, the probe is made of silicon-manganese-molybdenum-vanadium steel.
In one embodiment, the measuring range of the pressure tester is 0-45 Mpa.
In one embodiment, the formation pressure tester has a temperature resistance range of 0-210 ℃.
In one embodiment, the pressure tester is a storage pressure tester.
The embodiment of the utility model provides a formation pressure testing arrangement based on well drilling along with boring through at drill bit upper portion installation ground pressure tester, can not receive the influence in-process that mud invaded in the stratum, carry out pressure test, can understand that this kind of measurement mode can reflect original formation pressure, on the other hand, because the formation pressure testing arrangement that this embodiment provided can not receive the influence of well condition, has reduced the harm to the instrument.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of the overall structure of a formation pressure testing device based on drilling while drilling according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a ground pressure tester according to an embodiment of the present invention;
fig. 3 is a schematic view of a supporting arm structure according to an embodiment of the present invention.
Reference numerals:
1. a drill bit;
2. a backflow limiting valve;
3. a formation pressure tester;
4. a drill stem;
5. a support arm;
5-1, moment arm;
5-2, supporting blocks;
5-3, a hydraulic device;
6. a packer;
7. a hydraulic pump;
8. a probe;
9. a balancing valve;
10. a pressure sensor;
11. a fluid line.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clearly understood, the embodiments of the present invention are further described below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Because in the formation pressure testing arrangement based on well drilling while drilling of this application used well drilling while drilling mode, based on this, the embodiment of the utility model provides a formation pressure testing arrangement based on well drilling while drilling is provided.
Referring to fig. 1 and 2, the formation pressure testing apparatus based on drilling while drilling includes: drill bit 1, backward flow limiting valve 2, formation pressure tester 3 and drilling rod 4, wherein:
the two ends of the backflow limiting valve 2 are respectively connected with the drill bit 1 and the ground pressure tester 3, and the ground pressure tester 3 is connected with the drill rod 4.
The floor pressure tester 3 includes: a hydraulic pump 7, a probe 8, a balance valve 9, a pressure sensor 10 and a fluid line 11; wherein the fluid line 11 connects the probe 8, the hydraulic pump 7, the pressure sensor 10 and the balancing valve 9.
It will be appreciated that the hydraulic pump 7 in the formation pressure tester 3 is used to power the probe 8 and the pressure sensor is used to measure the pressure experienced by the probe 8, and that the balancing valve 9 can reduce or balance this difference when there is a large pressure difference in the formation fluid in the fluid line 11, acting as a dynamic and static balance adjustment.
In an embodiment, the formation pressure tester 3 may also be disposed on the outer wall of the drill rod 4.
In one embodiment, the formation pressure testing device based on drilling while drilling further comprises: and a support arm 5 disposed on the floor pressure tester 3.
It will be appreciated that when the formation is being pressure tested, the support arms 5 are spread apart to allow the probe 8 of the formation pressure tester 3 to be held against the formation for more accurate measurement of the formation pressure.
In one embodiment, the formation pressure testing device based on drilling while drilling further comprises: and the pressure packers 6 are arranged on the drill pipes 4 at two ends of the formation pressure tester 3.
Pressure packer 6 refers to a downhole tool having an elastomeric sealing element whereby the annulus between the various sizes of tubing string and the wellbore and between the tubing strings is sealed off and the producing zone isolated to control production fluids and protect the casing.
In one embodiment, the probe 8 is internally provided with a sealing pad and a filter screen.
It will be appreciated that the probe 8 designed with the above structure can prevent debris and other particulate matter in the formation from entering the formation tester 3 and damaging the tester.
In one embodiment, the formation pressure tester 3 is connected to the backflow limiting valve 2 by a stud nut and a stud bolt.
It will be appreciated that the backflow restriction valve 2 is a valve for protecting equipment from being damaged by excessive formation pressure, and once the pressure in the pipeline or device exceeds a preset value, the pressure can be automatically released, so as to achieve the purpose of safety protection.
In an embodiment, referring to fig. 3, the support arm 5 comprises: the hydraulic support comprises a force arm 5-1, a supporting block 5-2 and a hydraulic device 5-3 connecting piece, wherein one end of the force arm 5-1 is connected with the supporting block 5-2, and the other end of the force arm is connected with the hydraulic device 5-3.
The probe 8, the axis of the drill rod 4 and the support block 5-2 are located on the same plane.
It can be understood that when the stratum needs to be subjected to pressure testing, the hydraulic device 5-3 provides power for the force arm 5-1, so that the supporting block 5-2 is tightly attached to the well wall, and further the stratum pressure tester 3 is tightly attached to the stratum in the other direction of the well bore, and preferably, the supporting block 5-2 is made of wear-resistant materials.
In one embodiment, the probe 8 is made of silicon-manganese-molybdenum-vanadium steel.
In a specific embodiment, when a pretest is performed, the hydraulic pump 7 is started, the support arm 5 starts to support, the packer 6 pushes against the borehole wall, the probe 8 extracts a certain volume of formation fluid sample, thereby causing a formation pressure drop, after the pressure drop is finished, the undisturbed part of the formation fluid flows to a low-pressure area again until the pressure is restored to the original formation pressure, and the formation pressure tester 3 records the whole process.
In one embodiment, the pressure tester 3 has a measurement range of 0-45 MPa.
In one embodiment, the temperature resistance of the formation pressure tester 3 is in the range of 0-210 ℃.
In one embodiment, the layer pressure tester 3 is a storage type pressure tester.
In one embodiment, the formation pressure testing apparatus based on drilling while drilling further comprises a surface testing system, the surface testing system comprising: computer, pressure data acquisition processing module, power and peripheral equipment. For example, 2045 batteries can be selected as the power source, and a mouse and a keyboard can be selected as the peripheral devices.
Preferably, the formation pressure testing device based on drilling while drilling further comprises a memory, wherein the pressure sensor is electrically connected with the memory, and the memory is used for storing formation pressure data.
Preferably, the formation pressure testing device based on drilling while drilling further comprises: a communication module; the communication module is used for transmitting pressure data measured by the formation pressure tester to target equipment.
The embodiment of the utility model provides a formation pressure testing arrangement based on well drilling along with boring through at drill bit upper portion installation ground pressure tester, can not receive the influence in-process that mud invaded in the stratum, carry out pressure test, can understand that this kind of measurement mode can reflect original formation pressure, on the other hand, because the formation pressure testing arrangement that this embodiment provided can not receive the influence of well condition, has reduced the harm to the instrument.
In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Reference to the description of the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," "an example," "a particular example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The sequence of steps involved in the embodiments is for illustrative purposes, and the sequence of steps is not limited and may be adjusted as desired.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A formation pressure testing device based on drilling while drilling is characterized by comprising: drill bit (1), backward flow restriction valve (2), formation pressure tester (3) and drilling rod (4), wherein:
the two ends of the backflow limiting valve (2) are respectively connected with the drill bit (1) and the ground pressure tester (3), the ground pressure tester (3) is connected with the drill rod (4),
the floor pressure tester (3) includes: a hydraulic pump (7), a probe (8), a balance valve (9), a pressure sensor (10) and a fluid line (11); wherein the fluid lines (11) connect the probe (8), the hydraulic pump (7), the pressure sensor (10) and the balancing valve (9).
2. The formation pressure testing apparatus of claim 1, further comprising: and the supporting arm (5) is arranged on the floor pressure tester (3).
3. The formation pressure testing apparatus of claim 1, further comprising: and the pressure packer (6) is arranged on the drill pipe (4) at two ends of the formation pressure tester (3).
4. The formation pressure testing device according to claim 1, characterized in that a sealing foot pad and a filter screen are arranged inside the probe (8).
5. The formation pressure testing apparatus according to claim 1, wherein the formation pressure tester (3) is connected to the backflow restricting valve (2) by a stud nut and a stud bolt.
6. The formation pressure testing apparatus of claim 2, characterized in that the support arm (5) comprises: the hydraulic support device comprises a force arm (5-1), a supporting block (5-2) and a hydraulic device (5-3) connecting piece, wherein one end of the force arm (5-1) is connected with the supporting block (5-2), and the other end of the force arm is connected with the hydraulic device (5-3);
the probe (8), the axis of the drill rod (4) and the supporting block (5-2) are located on the same plane.
7. The formation pressure testing device according to claim 1, characterized in that the probe (8) is made of silicon-manganese-molybdenum-vanadium steel.
8. The formation pressure testing apparatus of claim 1, wherein the pressure tester (3) has a measurement range of 0-45 Mpa.
9. A formation pressure testing apparatus according to claim 1, characterized in that the temperature resistance range of the formation pressure tester (3) is 0-210 ℃.
10. The formation pressure testing apparatus according to claim 2, characterized in that the formation pressure tester (3) is a storage pressure tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921138646.0U CN210714682U (en) | 2019-07-19 | 2019-07-19 | Formation pressure testing device based on drilling while drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921138646.0U CN210714682U (en) | 2019-07-19 | 2019-07-19 | Formation pressure testing device based on drilling while drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210714682U true CN210714682U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921138646.0U Active CN210714682U (en) | 2019-07-19 | 2019-07-19 | Formation pressure testing device based on drilling while drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210714682U (en) |
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2019
- 2019-07-19 CN CN201921138646.0U patent/CN210714682U/en active Active
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