CN217462142U - Probe and stratum tester applying same - Google Patents

Abstract

The utility model belongs to the technical field of oil development equipment, a probe and use its formation tester is disclosed. The probe includes: the base member and the setting rubber of moulding plastics at the top surface of base member, the one side of setting rubber keeping away from the base member forms the curved surface, and the curved surface is crooked towards the top surface of base member. The utility model discloses a probe can realize setting better with the wall of a well.

Description

Probe and stratum tester applying same

Technical Field

The utility model relates to an oil development equipment technical field, concretely relates to probe and use its formation tester.

Background

Formation testers are used primarily to measure formation pressure and sample formation fluids at certain levels. The probe is pushed against the borehole wall to form a setting before pressure measurement and sampling. The probe is mostly square at present as a key part of formation tester, and this square probe is poor with columniform wall of a well contact effect, is difficult for setting, and the thickness of moulding plastics of the rubber part of moulding plastics of probe is uneven, leads to when setting, and the rubber of moulding plastics is because of everywhere deformation difference takes place easily to tear, causes the setting failure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can with the wall of a well better seat probe of sealing and use its formation tester.

According to the utility model discloses a probe, include: the base member and the setting rubber of moulding plastics at the top surface of base member, the one side of keeping away from the base member of setting rubber forms the curved surface, and the curved surface is crooked towards the top surface of base member.

Further, the setting rubber comprises a rubber body and a setting opening which is formed in the center of the rubber body and penetrates through the rubber body, and the setting opening is configured to protrude out of the curved surface.

Further, one surface of the base body used for injection molding of the setting rubber is formed into an arc-shaped surface.

Further, the radian of the arc-shaped surface is the same as that of the curved surface.

Further, a sampling channel penetrating through the base body is formed in the central area of the base body, and the sampling channel is communicated with the setting opening.

Further, the base body comprises a base portion and a connecting portion connected with the bottom surface of the base portion, the top surface of the base portion is used for injection molding of setting rubber, and the connecting portion is used for being connected with an external probe base.

Further, the bottom surface of the base portion is formed as a flat surface.

Furthermore, an external thread used for being in threaded connection with the probe base is formed on the outer peripheral wall of the connecting part.

Furthermore, a sealing element is arranged on the outer peripheral wall of the connecting part and is positioned between the external thread and the bottom surface of the base part.

According to the utility model discloses a formation tester, including probe and the above-mentioned probe that is linked together with the probe, the connecting portion of probe is linked together with the probe base of probe.

Compared with the prior art, the utility model discloses a probe has following advantage:

1) one surface of the setting rubber, which is far away from the base body, is formed into a curved surface, and the curved surface increases the contact area of the setting rubber and the well wall, so that the setting rubber can be better contacted with the well wall and set; two side edges of the curved surface are further constructed into circular arcs, and compared with the existing straight shape, the circular arcs are more beneficial to being contacted with a well wall, especially an inclined well, the contact area is large, and the setting is facilitated;

2) one surface of the base body, which is used for injection molding of the setting rubber, is formed into an arc-shaped surface, and the design of the arc-shaped surface increases the contact area between the base body and the setting rubber, so that the connection between the setting rubber and the base body is more reliable, and the setting rubber is not easy to fall off;

3) the radian of the arc-shaped surface is set to be the same as that of the curved surface, so that the stress deformation of the setting rubber is more uniform, the setting rubber is not easy to damage, and the service life of the setting rubber is prolonged.

Drawings

Fig. 1 is a schematic perspective view of a probe according to an embodiment of the present invention;

fig. 2 is a front cross-sectional view of a structure of a probe according to an embodiment of the present invention;

fig. 3 is a top view of a structure of a probe according to an embodiment of the present invention.

Detailed Description

For better understanding of the purpose, structure and function of the present invention, the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 to 3 show the structure of a probe 100 according to an embodiment of the present invention. As shown in fig. 1 to 3, the probe 100 includes: the base body 2 and the setting rubber 1 injected on the top surface 23 of the base body 2, wherein one surface of the setting rubber 1 far away from the base body 2 is formed into a curved surface 13, and the curved surface is bent towards the top surface 23 of the base body 2.

The utility model discloses a probe 100 is formed into curved surface 13 through the one side of keeping away from base member 2 that will sit and seal rubber 1, and this curved surface 13 has increased the area of contact of sitting and sealing rubber 1 with the wall of a well to make and sit and seal rubber 1 can contact with the wall of a well and sit better, especially to the inclined shaft, the design of this curved surface more does benefit to and contacts with the wall of a well, does benefit to and sits and seal.

Further, as shown in fig. 3, both side edges 14 of the curved surface 13 are configured to be circular arcs, which are more beneficial to contact with the well wall than the existing straight shape, especially for inclined wells, and the contact area is large, which is beneficial to setting.

In a preferred embodiment as shown in fig. 2, the setting rubber 1 may include a rubber body 11 and a setting opening 12 formed at the center of the rubber body 11 and penetrating the rubber body 11, the setting opening 12 being configured to protrude from the curved surface 13. Through this setting, but set up opening 12 and preferentially contact with the wall of a well, is further pushed down the in-process that sets up to the wall of a well at the set opening, because of the area of contact of curved surface 13 with the wall of a well is bigger for set up opening 12 is more abundant with the setting of the wall of a well, thereby has improved the seal of set opening 12 setting on the wall of a well leakproofness and reliability.

Preferably, as shown in fig. 2, one face 23 of the base body 2 for injection molding the setting rubber 1 is formed as an arc face. The design of this arcwall face has increased base member 2 and has set the area of contact of rubber 1 for setting up being connected of rubber 1 and base member 2 more reliably, setting up rubber 1 and be difficult for taking place to drop.

In a preferred embodiment, the arc of the arcuate surface may be the same as the arc of the curved surface, as shown in FIG. 2. This setting makes rubber body 11 the same at the thickness of moulding plastics of the upper surface of base member 2 (being used for the one side 23 of the setting rubber 1 of moulding plastics) to make the atress of setting rubber 1 warp more evenly, difficult emergence damage is favorable to improving the life of setting rubber 1.

According to the present invention, as shown in fig. 2, the central region of the base body 2 is formed with a sampling passage 25 penetrating the base body 2, and the sampling passage 25 is communicated with the setting opening 12. The communicating sampling passage 25 and the setting opening 12 are used as a fluid passage when sampling formation fluid at a specific level.

Further, the base body 2 may include a base portion 21 and a connection portion 22 connected to a bottom surface 24 of the base portion 21, a top surface of the base portion 21 is used for injection molding of setting rubber, and the connection portion 22 is used for connection to an external probe base (not shown in the figure).

Preferably, the bottom surface 24 of the base portion 21 may be formed as a flat surface, which makes the connection of the probe head 100 with an external probe mount tighter.

It is also preferable that the outer peripheral wall of the connection part 22 may be formed with an external thread 26 for screw-coupling with the probe base, and the connection part 22 is screw-coupled with the probe base to facilitate quick coupling of the probe head 100 with an external probe base.

Further, as shown in fig. 2, a sealing member 27 may be further disposed on the outer peripheral wall of the connecting portion 22, and the sealing member 27 is located between the external thread 26 and the bottom surface 24 of the base portion 21. The seal 27 is used to effect a sealed connection of the probe head 100 to the external probe mount to prevent external mud from entering the interior of the probe.

Preferably, an annular groove for inserting the fixing packing 27 may be formed on the outer circumferential wall of the connection portion 22.

Furthermore, the utility model also provides a formation tester, including probe and the above-mentioned probe 100 that is linked together with the probe, the connecting portion 22 of probe 100 is linked together with the probe base of probe. The formation tester applying the probe 100 has a better setting effect, and is beneficial to quickly and accurately sampling the formation to be sampled.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A probe, comprising: the base body and the setting rubber of moulding plastics on the top surface of base body, the one side of setting rubber keeping away from the base body forms the curved surface, the curved surface is towards the top surface bending of base body.

2. The probe of claim 1, wherein the setting rubber comprises a rubber body and a setting opening formed in the center of the rubber body and penetrating the rubber body, the setting opening being configured to protrude from the curved surface.

3. The probe of claim 2, wherein a face of the base for injection molding the setting rubber is formed as an arc-shaped face.

4. The probe of claim 3, wherein the arc of the curved face is the same as the arc of the curved face.

5. The probe of any one of claims 2 to 4, wherein a central region of the base body is formed with a sampling passage through the base body, the sampling passage communicating with the setting opening.

6. The probe of claim 5, wherein the base body comprises a base portion and a connecting portion connected to a bottom surface of the base portion, a top surface of the base portion is used for injection molding the setting rubber, and the connecting portion is used for connecting to an external probe base.

7. The probe of claim 6, wherein a bottom surface of the base portion is formed as a flat surface.

8. The probe head as claimed in claim 7, wherein the outer peripheral wall of the connecting portion is formed with an external thread for screw-coupling with the probe base.

9. The probe of claim 8, wherein a seal is further disposed on the outer peripheral wall of the connecting portion, the seal being located between the external threads and the bottom surface of the base portion.

10. A formation tester comprising a probe and a probe head according to any one of claims 1 to 9 in communication with the probe, the connection of the probe head being in communication with a probe base of the probe.

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