CN211038622U - Cluster well borehole anti-collision short section and anti-collision system - Google Patents
Cluster well borehole anti-collision short section and anti-collision system Download PDFInfo
- Publication number
- CN211038622U CN211038622U CN201921502134.8U CN201921502134U CN211038622U CN 211038622 U CN211038622 U CN 211038622U CN 201921502134 U CN201921502134 U CN 201921502134U CN 211038622 U CN211038622 U CN 211038622U
- Authority
- CN
- China
- Prior art keywords
- well
- collision
- data processing
- processing center
- magnetic field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000002445 nipple Anatomy 0.000 claims abstract description 11
- 238000005553 drilling Methods 0.000 abstract description 11
- 230000005389 magnetism Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 238000004364 calculation method Methods 0.000 description 8
- 230000006698 induction Effects 0.000 description 8
- 238000000926 separation method Methods 0.000 description 6
- 230000002265 prevention Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model discloses a cluster well anticollision nipple joint and anticollision system, anticollision system is including preventing bumping nipple joint device, magnetic strength measuring device and data processing center 10, it includes body 3 to prevent bumping nipple joint device, install permanent magnetism ring 2 on the body 3, drill bit 1 is installed to the one end of body 3, and other end body 3 is connected with upper portion drilling tool 4, magnetic strength measuring device includes magnetic field intensity measuring apparatu 7, magnetic field intensity measuring apparatu 7 passes through cable 8 and connects on data processing center 10, prevent bumping nipple joint device and place in current well 5, magnetic strength measuring device places in adjacent well 9, the distance between current well 5 and the adjacent well 9 is calculated through data processing center 10 and is reachd. The utility model discloses can effectively reduce the error of measuring and calculating to and avoid the well orbit to hand over the risk of bumping effectively.
Description
Technical Field
The utility model relates to a well anticollision nipple joint and anticollision system, more specifically the utility model relates to a cluster well's well anticollision nipple joint and anticollision system mainly.
Background
At present, with the wide application of special process wells in various large oil fields, the number of cluster wells is more and more, the distance between wells is smaller and smaller, accidental well collision accidents occur, the environmental problems and economic losses caused by the mutual collision of the wells are possibly disastrous, and therefore, the evaluation of the well track for collision prevention and the avoidance of the risk of the mutual collision of the wells are more and more important;
the anti-collision problem is the core problem of ensuring safe and rapid construction of the cluster well group of the dense well mouth, the anti-collision work runs through all links of preparation, engineering design and construction before drilling of the cluster well group of the dense well mouth, in the drilling process, the uncertainty of geological targets and stratum build slope brings certain difficulty to the cluster well construction, unpredictable risks exist, and the key problem of cluster well development is that how to ensure the distance between a drill bit and an adjacent well is kept within a safe distance becomes, in addition, the existing method can only calculate the distance between two wells through a scanning method, errors exist between theoretical calculation and actual calculation, well track collision still cannot be avoided, and great potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The patent aims to overcome the defects of the prior art and provide a system for preventing the collision of the well track, which has the advantages of compact structure, safety, reliability and simple operation.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a cluster well anticollision nipple joint, its characterized in that: the anti-collision short section device comprises a body and a permanent magnet ring, wherein the permanent magnet ring is installed on the body, one end of the body is provided with a short section male buckle, and the other end of the body is provided with a short section female buckle.
The utility model provides a prevent cluster well borehole anticollision system, its characterized in that: the permanent magnet motor is characterized in that a plurality of annular grooves (12) are formed in the body (3), the depth, the thickness and the width of each annular groove (12) are equal to those of the permanent magnet rings (2), and the permanent magnet rings (2) are sleeved in each annular groove (12).
The utility model provides a prevent cluster well borehole anticollision system, its characterized in that: including cluster well bore anticollision nipple joint, magnetic strength measuring device and data processing center (10), magnetic strength measuring device includes magnetic field intensity measuring apparatu (7), magnetic field intensity measuring apparatu (7) are connected on data processing center (10) through cable (8), the anticollision nipple joint is placed in current well (5), magnetic strength measuring device is placed in adjacent well (9), the distance between current well (5) and adjacent well (9) is calculated through data processing center (10) and is reachd.
Compared with the prior art, the beneficial effects of the utility model are that:
1. by installing the permanent magnet ring 2 which can permanently and continuously generate the magnetic field on the body 3 and then placing the body 3 at the bottommost part of the current well 5, the magnetic field can be generated at the bottom of the current well 5 under the condition of not needing to be electrified, and the structure of the device is effectively simplified.
2. A magnetic field intensity measuring instrument 7 is placed in the adjacent well 9, the magnetic field intensity of the magnetic field intensity measuring instrument 7 can sense and detect the magnetic field intensity from the permanent magnet ring 2, a cable 8 is connected to the magnetic field intensity measuring instrument 7, and the other end of the cable 8 is connected to a data processing center 10; the magnetic field intensity detected by the magnetic field intensity measuring instrument 7 is transmitted into the data processing center 10 through the cable 8, and the data processing center 10 calculates the shortest distance between the current well 5 and the adjacent well 9 according to the intensity of the magnetic field, so that the risk of collision of well tracks can be effectively and timely avoided.
3. The magnetic field intensity measuring instrument 7 transmits data to the data processing center 10, and the data processing center 10 performs calculation according to a preset calculation method, so that errors generated by calculation can be effectively reduced.
Drawings
FIG. 1 is a schematic structural view of a body;
fig. 2 is a schematic structural diagram for explaining an embodiment of the present invention;
FIG. 3 is a schematic diagram of the anti-collision short section and the magnetic induction measuring instrument during the drilling process;
FIG. 4 is the point where the distance between the two wells is the smallest;
in the figure, 1 is a drill bit, 2 is a permanent magnet ring, 3 is a body, 4 is a power drilling tool, 5 is a current well, 6 is an upper drilling tool, 7 is a magnetic field intensity measuring instrument, 8 is a cable, 9 is an adjacent well, 10 is a data processing center, 11 is a short section male fastener, 12 is an annular groove, and 13 is a short section female fastener.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1, the anti-collision pup joint for a cluster well borehole comprises a body 3 and a permanent magnet ring 2, wherein the permanent magnet ring 2 can continuously generate a magnetic field, in order to enable the permanent magnet ring 2 to stably exert the function of generating the magnetic field, a plurality of annular grooves 12 are arranged on the body 3, the size of each annular groove 12 is completely consistent, the annular grooves 12 are the same as the size of the permanent magnet ring 2 in depth, thickness and width, in order to facilitate installation and later maintenance, the annular grooves and the permanent magnet ring are in clearance fit, in order to ensure the strength of the magnetic field, three annular grooves 12 are arranged on the body 3, and one permanent magnet ring 2 is arranged on each annular groove 12.
Referring to fig. 2, the system for preventing collision of the cluster well borehole comprises a collision prevention short section, a magnetic strength measuring device and a data processing center 10, wherein the collision prevention short section of the cluster well borehole is arranged in a current well 5, one end of a body 3 is provided with a short section male buckle 11, the other end of the body is provided with a short section female buckle 13, the short section male buckle 11 is matched with an underground power drilling tool 4 in a threaded matching mode, an upper drilling tool is installed at the top of the power drilling tool 4, and the short section female buckle 13 is matched and connected with a drill bit 1; magnetic strength measuring device places in adjacent well 9, and including magnetic field strength measuring apparatu 7, the upper portion of magnetic field strength measuring apparatu 7 is connected with cable 8, the other end of cable 8 is connected on data processing center 10, but magnetic field strength measuring apparatu 7 real-time detection comes from the magnetic field strength of permanent magnetism ring 2, and transmit intensity data to data processing center 10, the staff need be to the current well 5 of data processing center 10 input and the relevant data of adjacent well 9 earlier, including the inclination of current well 5, the diameter of adjacent well 9 etc, data processing center 10 is again according to built-in algorithm, calculate the current shortest distance of two wells, and in what position the collision will take place.
Referring to fig. 3 and 4, a method for preventing collision of boreholes in a cluster well comprises the steps of determining a measurement of a nearest distance between wells according to a magnetic field intensity change, calculating a nearest distance between two wells according to the magnetic field intensity, and preventing collision of the boreholes;
the measurement for determining the nearest distance between wells according to the change of the magnetic field intensity comprises the following steps:
s11: firstly, using anti-collision scanning to calculate the nearest distance between the current well and the adjacent well which are being drilled, and finding out the nearest distance between the current well and the adjacent well
The vertical depth of the close distance point;
s12: the anti-collision short joint is put into the current well to a specified vertical depth;
s13: setting the magnetic induction measuring instrument in the adjacent well to the specified vertical depth, recording the reading of the magnetic induction measuring instrument, and recording
Comprises the following steps: a;
s14: on the basis of the current well depth of the adjacent well, the size of magnetic induction measured by the cable 2m is lifted up through a magnetic induction measuring instrument and is recorded as: b;
s15: and then lowering the cable for 2m to measure the magnetic induction intensity, and recording as: c;
s16: comparing the values of a, b and c, if a > b and a > c, the position is the nearest distance between the two wells, otherwise, selecting a maximum value from the values of a, b and c, lifting and lowering the measured magnetic field strength of 2 meters on the basis of the position until a point with large middle data and small two ends data is found, and the point is the point with the minimum distance between the two wells
The calculating the nearest distance between the two wells according to the magnetic field intensity comprises:
establishing a space coordinate system on the anti-collision short permanent magnet ring: the expression of each component of the magnetic field of the anti-collision short section under the condition of uniform magnetization is (formula 1):
in the formula, Hax, Hay and Haz are three mutually perpendicular components of the space of a measuring point P, r is the distance between any measuring point P and a infinitesimal Q, Mx, My and Mz are components of the magnetization intensity in a space coordinate, u0 is the magnetic permeability of the stratum, and u is a magnet volume variable.
Assuming that the total length of the permanent magnet ring is 2h, the cross-sectional area s and the infinitesimal of the magnetic section is Q (0, η,0), when the magnetization direction of the permanent magnet is along the Y axis, mx and mz are both 0, by deriving the above equation 1, each component of the magnetic induction at point P is (equation 2):
when the magnetic measurement equipment is put into the adjacent well, the component values (H1, H2, H3) of the magnetic induction intensity can be obtained to correspond to the components in the formula 2 one by one, and the following can be obtained according to the formula 2:
bringing formula 3 into formula 2 can result:
taking H as a variable and other parameters as known quantities, establishing a database and a change rule of the relation among H, x and y, finding H in the database through measured values to obtain corresponding x and y, and finally obtaining the position relation between two wells according to a space distance calculation formula under the measured data.
The well collision early warning method comprises the following steps: borehole separation coefficient concept: the method comprises the steps of firstly solving an error ellipsoid equation of a target point and an adjacent well reference point in a well track, taking the maximum main shaft lengths of two error ellipsoids as the spherical diameters, taking each point as the spherical center to form a sphere, and defining the ratio of the distance between the two points and the sum of the two spherical radii as a well separation coefficient. The calculation formula of the traditional separation coefficient is as follows:
r1, r2 are the borehole radii of the target point and the reference point, respectively;
r1, R2 is the maximum major semi-axis of the error ellipsoid of the target point and the reference point;
international general rules for collision protection (see table 1): and obtaining a point with the minimum distance between the two wells according to the method, obtaining the maximum major semiaxis of the error ellipsoid of the two wells according to an error analysis and solution error ellipsoid equation, calculating a separation coefficient according to the well separation coefficient formula, and early warning according to the calculation result.
TABLE 1 International general rules for crash prevention
| Coefficient of Separation (SF) | Risk of collision | Measures taken |
| 1.5≤SF≤5.0 | Warning | Carefully detecting the proximity of adjacent wells |
| 1.0≤SF＜1.5 | Less risk | Reaching the lower limit of safe drilling and simultaneously doing collision prevention work |
| SF≤1.0 | Major risk | Until the risk is eliminated, otherwise drilling cannot be continued |
In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (1)
1. A cluster well borehole collision avoidance system, its characterized in that: the anti-collision short section comprises a body (3) and a permanent magnetic ring (2), wherein the permanent magnetic ring (2) is installed on the body (3), one end of the body (3) is provided with a short section male buckle (11), and the other end of the body is provided with a short section female buckle (13); the body (3) is provided with a plurality of annular grooves (12), the depth, thickness and width of each annular groove (12) are equal to those of the permanent magnet ring (2), and the permanent magnet ring (2) is sleeved in each annular groove (12); still including anticollision nipple joint, magnetic strength measuring device and data processing center (10), magnetic strength measuring device includes magnetic field intensity measuring apparatu (7), magnetic field intensity measuring apparatu (7) are connected on data processing center (10) through cable (8), the anticollision nipple joint is placed in current well (5), magnetic strength measuring device is placed in adjacent well (9), the distance between current well (5) and adjacent well (9) is calculated through data processing center (10) and is reachd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921502134.8U CN211038622U (en) | 2019-09-10 | 2019-09-10 | Cluster well borehole anti-collision short section and anti-collision system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921502134.8U CN211038622U (en) | 2019-09-10 | 2019-09-10 | Cluster well borehole anti-collision short section and anti-collision system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211038622U true CN211038622U (en) | 2020-07-17 |
Family
ID=71534635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921502134.8U Expired - Fee Related CN211038622U (en) | 2019-09-10 | 2019-09-10 | Cluster well borehole anti-collision short section and anti-collision system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211038622U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593852A (en) * | 2019-09-10 | 2019-12-20 | 西南石油大学 | Cluster well borehole anti-collision short section, anti-collision system and anti-collision method |
| CN115114800A (en) * | 2022-07-15 | 2022-09-27 | 中国石油天然气集团有限公司 | Dense cluster well borehole trajectory anti-collision identification method, system and equipment |
| CN115324565A (en) * | 2022-09-26 | 2022-11-11 | 中国石油天然气集团有限公司 | Borehole trajectory measurement and control method and device, electronic equipment and storage medium |
-
2019
- 2019-09-10 CN CN201921502134.8U patent/CN211038622U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593852A (en) * | 2019-09-10 | 2019-12-20 | 西南石油大学 | Cluster well borehole anti-collision short section, anti-collision system and anti-collision method |
| CN115114800A (en) * | 2022-07-15 | 2022-09-27 | 中国石油天然气集团有限公司 | Dense cluster well borehole trajectory anti-collision identification method, system and equipment |
| CN115324565A (en) * | 2022-09-26 | 2022-11-11 | 中国石油天然气集团有限公司 | Borehole trajectory measurement and control method and device, electronic equipment and storage medium |
| CN115324565B (en) * | 2022-09-26 | 2023-06-09 | 中国石油天然气集团有限公司 | Wellbore track measurement and control method and device, electronic equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110593852A (en) | Cluster well borehole anti-collision short section, anti-collision system and anti-collision method | |
| CN211038622U (en) | Cluster well borehole anti-collision short section and anti-collision system | |
| CN102996120B (en) | A kind of relief well based on three electrode systems is communicated with detection system with accident well | |
| CN109306863B (en) | Cluster well upper straight well section anti-collision early warning method based on adjacent well casing string self magnetic field detection | |
| CN102003170B (en) | Calculating method for SAGD (Steam-Assisted Gravity Drainage) double-horizontal well drilling electromagnetic distance measurement guide | |
| CN104594881B (en) | Method for determining relative special positions of adjacent well parallel sections | |
| CN101799558B (en) | Electromagnetic surveying system while drilling of adjacent-well parallel intervals | |
| CN101713286A (en) | Electromagnetic system for detecting distance between adjacent wells while drilling | |
| CN105064982B (en) | Coal field ground hole is accurately oriented to target spot in underworkings docks equipment and method | |
| CN101806210A (en) | System using solenoid groups to achieve electromagnetic guiding distance measurement while drilling | |
| CN108166971B (en) | A kind of Multifunctional inclination measuring apparatus and the method based on inclinometer progress offset well casing relative position judgement | |
| CN101713288B (en) | Measuring instrument for distance between adjacent wells by electromagnetic detection while drilling | |
| CN109869140B (en) | Adjacent well distance measuring method based on magnetic field gradient | |
| CN109405880A (en) | A kind of superficial part goaf earth's surface combines monitoring and pre-warning system and method with underground | |
| US11692397B2 (en) | Directional well trajectory control method based on drill pipe drive | |
| CN102644457B (en) | Method for calculating distance between adjacent wells whiling drilling | |
| WO2024041667A1 (en) | Multi-parameter measurement-while-drilling system for underground coal mines, and measurement method | |
| CN113107472B (en) | Active magnetic distance measuring device and method suitable for well drilling collision prevention | |
| CN104781503A (en) | Drilling casing pipe magnetizing positioning method | |
| CN102305610B (en) | Dynamic theory and method for judging movement of earth surface of side slope | |
| CN102817606A (en) | Borehole-while-drilling track detector and borehole-while-drilling track detection monitoring method | |
| Li et al. | A method for the detection of the distance & orientation of the relief well to a blowout well in offshore drilling | |
| CN204851239U (en) | Position gamma well logging device | |
| CN111912953A (en) | Deep-well mining slope stability determination method based on excavation amount monitoring | |
| CN113759097B (en) | Stress state analysis method based on coal mine roadway surrounding rock stress on-line monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200717 |