CN220551110U - Logging while drilling device for drilling tool - Google Patents

Abstract

The utility model provides a logging while drilling device for a drilling tool, which comprises a screw rod, a tool joint sleeved outside the screw rod, a containing mechanism arranged in the tool joint, a first containing cavity arranged on the radial outer side and used for containing a sensor, and a second containing cavity arranged on the radial inner side and used for containing a power supply piece, wherein the upstream end and the downstream end of the screw rod are connected with the drilling tool. The utility model can lead the sensor to follow the drilling tool to carry out logging while drilling detection work, thereby being capable of carrying out comprehensive and simultaneous monitoring work on different kinds of working conditions under the well.

Description

Logging while drilling device for drilling tool

Technical Field

The utility model relates to the field of oil and gas field exploration, in particular to a logging while drilling device for a drilling tool.

Background

With the technological progress, the logging technology has been developed into a comprehensive logging technology integrating geology, gas measurement, localization and engineering based on electronic technology and computer technology, and plays a role in irreplaceable other means in the oil and gas exploration and development process. However, with the rapid development of drilling technology and the increasing difficulty of oil and gas exploration and development, the technical requirements on the logging industry are also increasing. Although the development of logging technology is faster in recent years, the technology is obviously behind in comparison with the technology of the industry closely related to the logging technology, and thus the phenomenon of restricting the application of new technology in other related industries is revealed.

Well logging technology in which surface sensor detection is a technical means has been significantly retarded. For example, highly effective and safe PDC bits for drilling applications, have to drill other bits for critical intervals because geologic logging tools that rely on cuttings for formation lithology descriptions are no longer reliable. The comprehensive logging technology can not meet the needs of discovering and evaluating the oil and gas layers of key wells such as horizontal wells, high-inclination wells, unbalanced wells and underbalanced wells to a certain extent. The current logging techniques are even more deficient if air drilling, foam drilling, etc. are performed. Obviously, if the logging industry restricts the application of high technology of related industries or does not keep pace with the development of the related technologies, the logging industry cannot possibly improve the service quality and position, cannot possibly play the role of geologist eyes, and the service range is also atrophic.

The sensor technology in the prior art is mature, but the downhole sensor technology cannot be practically applied without a downhole adaptive tool, so that a series of problems can occur. For example, the problems of incapability of tracking real-time change of a real-time drilling stratum, incapability of detecting stratum temperature change at a drill bit in real time, incapability of tracking and conducting downhole oil gas display in real time and the like are solved.

Accordingly, it is desirable in the art to provide a logging while drilling device for a drilling tool to address the sensor logging problem.

Disclosure of Invention

The utility model aims to provide a logging while drilling device for a drilling tool, which can enable a sensor to follow the drilling tool to perform logging while drilling detection work, so that comprehensive and simultaneous monitoring work can be performed on different kinds of working conditions under the well.

According to the present utility model there is provided a logging while drilling apparatus for a drilling tool, comprising a lead screw having an upstream end and a downstream end both connected to the drilling tool,

a tool joint sleeved outside the screw rod and connected with the outer peripheral surface of the screw rod in a sealing way, and

the accommodating mechanism is arranged in the tool joint and comprises a first accommodating cavity which is arranged on the radial outer side and used for accommodating the sensor, and a second accommodating cavity which is arranged on the radial inner side and used for accommodating the power supply piece.

In one embodiment, the lead screw includes a first lead screw portion and a second lead screw portion having a threaded surface, and a third lead screw portion having a smooth surface disposed between the first lead screw portion and the second lead screw portion, wherein the tool joint is within the scope of the third lead screw portion.

In one embodiment, at least two annular grooves are provided along the axial direction of the third screw portion, a bearing is provided in the annular grooves,

the tool joint is configured with an annular projection that is capable of extending into the annular recess and into engagement with the bearing.

In one embodiment, a plurality of the first receiving cavities configured as arc-shaped grooves are provided equidistantly along the circumferential direction of the tool joint.

In one embodiment, the first receiving cavity is provided on an outer wall surface of the tool joint,

the logging while drilling device further comprises a cover plate for closing the first accommodating cavity.

In one embodiment, the first receiving cavity is provided on an inner wall surface of the tool joint,

the logging while drilling apparatus further includes a seal ring disposed between the tool joint and the third lead screw portion.

In one embodiment, the tool joint is formed by splicing at least two joint bodies which are constructed in a partially columnar form, and at least one first accommodating cavity is arranged in each joint body.

In one embodiment, the adjacent connector bodies are fixedly connected through a lock catch.

In one embodiment, each of the power members is connected to at least one of the sensors.

In one embodiment, the logging while drilling apparatus further comprises a plug mechanism disposed at an upstream end of the tool joint, the plug mechanism comprising a first plug configured to receive information from the sensor and capable of sealing the first receiving cavity, and a second plug configured to plug the second receiving cavity.

Compared with the prior art, the utility model has the advantages that:

firstly, the utility model can lead the sensor to carry out logging while drilling detection work along with the drilling tool, thereby carrying out comprehensive and simultaneous monitoring work (such as displaying monitored formation change, monitoring formation temperature change in real time and the like) on different working conditions under the well.

Secondly, the utility model can promote the independent working capacity between the tool joint and the screw rod (the tool joint is kept stable when the screw rod rotates) through the annular bulge, the annular groove and the bearing, thereby prolonging the service life of the sensor in the pit and further improving the accuracy of receiving the underground data.

Thirdly, the tool joint can provide effective stress support for the sensor, so that human errors of ground analysis are eliminated, and the purpose of real-time confirmation of underground pressure is achieved.

Drawings

The utility model will be described in detail below with reference to the attached drawing figures, wherein:

FIG. 1 schematically illustrates the structure of a logging while drilling apparatus for a drilling tool according to the present utility model;

FIG. 2 is a schematic view of a lead screw in a logging while drilling apparatus for a drilling tool according to the present utility model;

FIG. 3 is a cross-sectional view of a tool joint in a logging while drilling apparatus for a drilling tool according to the present utility model;

fig. 4 is a partial view of a tool joint in a logging while drilling device for a drilling tool according to the present utility model.

In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.

Detailed Description

In order to make the technical solution and advantages of the present utility model more apparent, exemplary embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some of the embodiments of the present utility model and are not exhaustive of all embodiments. And embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

It will be readily appreciated that the directional terms "upstream" or "above" or the like refer to the direction closer to the wellhead, i.e., the top direction in fig. 1. The directional term "downstream" or "below" or the like refers to a direction away from the wellhead, i.e., the bottom end direction in fig. 1.

The utility model will be further described with reference to the accompanying drawings.

Fig. 1 schematically shows the structure of a logging while drilling device 100 for a drilling tool according to the present utility model.

As shown in fig. 1, a logging while drilling device 100 for a drilling tool according to the present utility model includes a lead screw 1. The lead screw 1 serves an effective connection and support function in the logging while drilling apparatus 100.

In one embodiment, both the upstream and downstream ends of the lead screw 1 can be connected to a downhole drilling tool to perform logging while drilling operations.

Preferably, as shown in fig. 1, the screw 1 comprises a first screw portion 11 and a second screw portion 12. Wherein the first lead screw portion 11 is provided at an upper portion, and a threaded surface is formed at an outer circumferential surface of the first lead screw portion 11 so as to be capable of being formed to be effectively engaged with a downhole drilling tool. The second lead screw portion 12 is provided at a lower portion, and an outer peripheral surface of the second lead screw portion 12 is formed with a threaded surface so as to be able to form an effective engagement with a downhole drilling tool.

Fig. 2 is a schematic view of a lead screw 1 in a logging while drilling device 100 for a drilling tool according to the present utility model.

In a specific embodiment, as shown in fig. 1 and 2, the screw 1 further comprises a third screw portion 13. The third lead screw portion 13 is located between the first lead screw portion 11 and the second lead screw portion 12. Preferably, the outer peripheral surface of the third lead screw portion 13 is formed with a smooth surface so as to be capable of forming a sealed connection with the tool joint 2 (described later).

According to the present utility model, the logging while drilling apparatus 100 further comprises a tool joint 2.

As shown in fig. 1, the tool joint 2 is constructed in the form of a hollow sleeve. Preferably, the tool joint 2 can be sleeved outside the third screw part 13 of the screw 1 so that a sealed connection can be formed with the third screw part 13.

In a specific embodiment, as shown in fig. 2, at least two annular grooves 131 are provided in the axial direction of the third lead screw portion 13. Preferably, the annular groove 131 is provided on the outer circumferential surface of the third lead screw portion 13.

In one embodiment, bearings (not shown in the drawings) are provided in the annular recess 131 to provide a stable sliding connection between the tool joint 2 and the screw 1, the contents of which are described below. In other words, when the screw 1 is rotated, the tool joint 2 can maintain a fixed posture with respect to the screw 1, thereby securing the safety of use of the sensor 101 (described later).

In a specific embodiment, the tool joint 2 is configured with an annular protrusion 21.

Fig. 4 is a partial view of the tool joint 2 in the logging while drilling device 100 for a drilling tool according to the present utility model.

Preferably, as shown in fig. 4, an annular projection 21 is provided on the inner peripheral surface of the tool joint 2, and the annular projection 21 can protrude into the annular groove 131 so that a stable engagement relationship with the bearing can be established.

In this way, on the one hand, the tool joint 2 can be effectively mounted on the screw 1, so that logging while drilling can be performed. On the other hand, under the action of the annular bulge 21, the annular groove 131 and the bearing, the tool joint 2 and the screw rod 1 can have independent working capacity (the tool joint 2 is kept stable when the screw rod 1 rotates), so that the service life of the sensor 101 in the pit can be prolonged, and the accuracy of receiving underground data can be further improved.

In accordance with the present utility model, as shown in FIG. 1, the logging while drilling apparatus 100 further includes a containment mechanism. The receiving means are arranged in the tool joint 2 and comprise a first receiving chamber 31 arranged radially outside and a second receiving chamber 32 arranged radially inside.

Preferably, as shown in fig. 1, a sensor 101 can be placed in the first receiving chamber 31 so that the downhole conditions can be monitored in real time by the sensor 101. The principle of operation of the sensor 101 is well known to those skilled in the art.

Preferably, as shown in fig. 1, a power supply member 102 can be placed in the second accommodation chamber 32, and the power supply member 102 is connected to the sensor 101, so that the sensor 101 can be supplied with power for a long time.

In a preferred embodiment, several first receiving cavities 31 are provided equally spaced along the circumference of the tool joint 2. In this way, the tool joint 2 can carry a plurality of sensors 101 into the well at one time, so that different kinds of working conditions in the well can be monitored comprehensively and simultaneously, and the accuracy of receiving downhole data is improved.

Preferably, the first receiving chamber 31 is configured in the form of an arc-shaped groove. In this way, the contact area between the sensor 101 and the first accommodating cavity 31 is larger, so that the fixing capability of the sensor 101 is improved, the sensor 101 is ensured to have a stable working environment in the underground, and the accuracy of receiving underground data is further improved.

Fig. 3 is a cross-sectional view of a tool joint 2 in a logging while drilling device 100 for a drilling tool according to the present utility model.

In a specific embodiment, as shown in fig. 1 and 3, the first receiving chamber 31 is provided on the outer wall surface of the tool joint 2. In this way, the sensor 101 can be more easily installed and removed when the logging while drilling apparatus 100 is in use, thereby improving the operational efficiency of the logging while drilling apparatus 100.

Preferably, the logging while drilling apparatus 100 further comprises a cover plate (not shown). The cover plate can radially seal the first chamber 31, so that the safety of the sensor 101 in the first chamber 31 in underground operation is guaranteed, the service life of the sensor 101 is further prolonged, and the accuracy of receiving underground data is further improved.

It will be readily appreciated that in this embodiment a sealing layer may also be provided between the tool joint 2 and the screw 1, ensuring a relatively independent working environment between the two at all times.

In a not shown embodiment, the first receiving chamber 31 is provided on the inner wall surface of the tool joint 2. In this way, the logging while drilling device 100 can protect the sensor 101 in the first chamber 31 more fully and more comprehensively when working downhole, thereby ensuring the safety of the sensor 101 and further improving the accuracy of receiving downhole data.

Preferably, the logging while drilling apparatus further comprises a sealing ring (not shown in the drawings). A sealing ring is arranged between the tool joint 2 and the third lead screw portion 13. Specifically, the sealing rings are respectively disposed at the upstream and downstream of the first chamber 31, so that the safety of the sensor 101 in the first chamber 31 can be ensured, and the service life of the sensor 101 can be further prolonged.

It will be readily appreciated that in this embodiment the annular grooves 131 are provided by being provided upstream and downstream of the first chamber 31, respectively.

In a preferred embodiment, there are two annular grooves 131 altogether, with one annular groove 131 being provided at the top end of the third lead screw portion 13 and the other annular groove 131 being provided at the bottom end of the third lead screw portion 13. In this way, the sensor 101 in the first chamber 31 can be made independent, so that negative effects on the operation of the sensor 101 can be avoided.

In one embodiment, as shown in fig. 4, the tool joint 2 is spliced from at least two joint bodies 201 configured in a partially columnar form. Preferably, at least one first receiving cavity 31 is provided in each joint main body 201. In this way, on the one hand, the tool joint 2 is enabled to be more easily mounted at the third lead screw portion 13 of the lead screw 1, thereby reducing the time for installation and removal of the logging while drilling apparatus 100. On the other hand, the sensor 101 in the first chamber 31 can have good independence, so that different kinds of working conditions in the well can be comprehensively and simultaneously monitored, and the accuracy of receiving the downhole data is improved.

In a preferred embodiment, as shown in fig. 4, the adjacent connector bodies 201 are fixedly connected by a latch 4. Accordingly, the sealing layer or the sealing ring can be more fully attached to the inner wall of the joint main body 201 under the action of the lock catch 4, so that the overall tightness of the logging while drilling device 100 is ensured, and the sensor 101 in the first chamber 31 and the power supply member 102 in the second chamber 32 can be comprehensively protected.

In a preferred embodiment, each power member 102 is coupled to at least one sensor 101. In this manner, not only can the utilization of the power supply member 102 be increased, but the overall weight of the logging while drilling apparatus 100 can be effectively reduced, thereby increasing the downhole operational capacity of the logging while drilling apparatus 100.

In one embodiment, as shown in FIG. 1, the logging while drilling apparatus further includes a plug mechanism disposed at the upstream end of the tool joint 2. The plug mechanism includes a first plug 51 and a second plug 52. Preferably, the first plug 51 is configured to receive information from the sensor 101 and to effectively seal the first receiving chamber 31. Preferably, the first plug 51 is capable of effectively sealing the second receiving chamber 32.

Compared with the prior art, the utility model has the advantages that:

firstly, the utility model can enable the sensor 101 to follow the drilling tool to perform logging while drilling detection work, so as to comprehensively and simultaneously monitor different working conditions under the well (for example, display monitored formation change, monitor formation temperature change in real time and the like).

Secondly, the utility model can promote the independent working capacity between the tool joint 2 and the screw rod 1 through the annular bulge 21, the annular groove 131 and the bearing (the tool joint 2 is kept stable when the screw rod 1 rotates), thereby prolonging the service life of the sensor 101 in the pit and further improving the accuracy of receiving the underground data.

Thirdly, the tool joint 2 in the utility model can provide effective stress support for the sensor 101, thereby eliminating human error of surface analysis and further realizing the purpose of real-time confirmation of the underground pressure.

The above is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto. Modifications and variations may readily be made by those skilled in the art within the scope of the present disclosure, and such modifications and variations are intended to be included within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A logging while drilling apparatus for a drilling tool, comprising:

the upstream end and the downstream end of the screw rod (1) are connected with a drilling tool,

a tool joint (2) sleeved outside the screw rod (1), and connected with the outer peripheral surface of the screw rod (1) in a sealing way, and

a housing mechanism arranged in the tool joint (2) and comprising a first housing chamber (31) arranged radially outside and used for placing a sensor (101), and a second housing chamber (32) arranged radially inside and used for placing a power supply piece (102).

2. Logging while drilling device for a drilling tool according to claim 1, characterized in that the screw (1) comprises a first screw part (11) and a second screw part (12) with a threaded surface, and a third screw part (13) with a smooth surface arranged between the first screw part (11) and the second screw part (12), wherein the tool joint (2) is in the range of the third screw part (13).

3. Logging while drilling device for a drilling tool according to claim 2, characterized in that at least two annular grooves (131) are provided in the axial direction of the third lead screw portion (13), in that a bearing is provided in the annular grooves (131),

the tool joint (2) is configured with an annular projection (21) which can extend into the annular recess (131) and form an engagement with the bearing.

4. Logging while drilling device for a drilling tool according to claim 3, characterized in that several of the first receiving cavities (31) configured as arc-shaped grooves are arranged equally along the circumference of the tool joint (2).

5. Logging while drilling device for a drilling tool according to claim 4, wherein the first receiving cavity (31) is provided on an outer wall surface of the tool joint (2),

the logging while drilling device further comprises a cover plate for closing the first receiving cavity (31).

6. Logging while drilling device for a drilling tool according to claim 5, wherein the first receiving cavity (31) is provided on an inner wall surface of the tool joint (2),

the logging while drilling device further comprises a sealing ring arranged between the tool joint (2) and the third screw rod part (13).

7. Logging while drilling device for drilling tools according to any of the claims 1 to 6, wherein the tool joint (2) is spliced from at least two joint bodies (201) configured in a partially cylindrical form, at least one first receiving cavity (31) being provided in each joint body (201).

8. Logging while drilling device for a drilling tool according to claim 7, characterized in that adjacent joint bodies (201) are fixedly connected by means of a locking catch (4).

9. Logging while drilling device for a drilling tool according to any of the claims 1 to 6, wherein each of the power supply elements (102) is connected to at least one of the sensors (101).

10. Logging while drilling device for a drilling tool according to any of the claims 1 to 6, further comprising a plug mechanism arranged at the upstream end of the tool joint (2), the plug mechanism comprising a first plug (51) for receiving information from the sensor (101) and being able to seal the first receiving cavity (31), and a second plug (52) for sealing the second receiving cavity (32).