CN203905839U - Double-ledge anti-torsion anti-bending petroleum drilling rig pipe threaded connecting structure with two ledges sealed - Google Patents
Double-ledge anti-torsion anti-bending petroleum drilling rig pipe threaded connecting structure with two ledges sealed Download PDFInfo
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- CN203905839U CN203905839U CN201420315859.7U CN201420315859U CN203905839U CN 203905839 U CN203905839 U CN 203905839U CN 201420315859 U CN201420315859 U CN 201420315859U CN 203905839 U CN203905839 U CN 203905839U
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Abstract
The utility model discloses a double-ledge anti-torsion anti-bending petroleum drilling rig pipe threaded connecting structure with the two ledges sealed. The double-ledge anti-torsion anti-bending petroleum drilling rig pipe threaded connecting structure with the two ledges sealed comprises a male threaded connector and a female threaded connector, wherein the male threaded connector is provided with an end surface and the outer ledge, the female threaded connector is provided with an end surface and the inner ledge, the end surface of the male threaded connector is an inner truncated cone surface, and correspondingly the inner ledge of the female threaded connector is an outer truncated cone surface, namely the outer conical inner ledge; in the same way, the end surface of the female threaded connector is the inner truncated cone surface, and correspondingly the outer ledge of the male threaded connector is the outer truncated cone surface. The double-ledge anti-torsion anti-bending petroleum drilling rig pipe threaded connecting structure with the two ledges sealed not only improves the anti-torsion and anti-bending strength of the connecting part of the male threaded connector and the female threaded connector, but also improves the sealing performance between the end surface of the male threaded connector and the inner ledge of the female threaded connector.
Description
Technical field
The utility model relates to a kind of drilling equipment, relates in particular to the two shoulder sealing of a kind of pair of shoulder torsion resistant and bending resistant oil drilling tools threaded connection structure.
Background technology
In Process of Oil Well Drilling, the working condition very severe of hole condition and drill string, stressing conditions is complicated.The threaded joints of drilling tool is the weakest link of drill string, and especially along with deep-well, ultradeep well, complex structural well drilling well increase, antitorque, the bending resistance of threaded joints and the problem of sealing are more outstanding.It is more and more obvious that common drill string screw thread is connected on the deficiency exposing in large the pressure of the drill, high pump pressure and high pulling torque drilling well.For adapting to the supporting drilling tool demand under complex hole condition, must increase the moment of torsion of drilling tool, prevent that drilling tool fracture failure accident from occurring.
It is that CN 1261948A name is called the patent application of " double shoulder tool joint of high moment of torsion " that Patent Office of the People's Republic of China discloses publication number on August 2nd, 2000." a kind of utilization is threaded and obtains the tubular threaded linkage in oil field of high torque transfer capability this Patent Application Publication, comprise: a tubular type male joint, described tubular type male joint has axially extended external screw thread between a radially outer outer shoulder and a radially inner male joint surface, described male joint comprises axially extended base portion and an axially extended fore-end between described male joint surface and external screw thread between described outer shoulder and external screw thread, described fore-end defines a front end cross-sectional area between footpath and its external diameter within it, described external screw thread is not more than 1 inch every foot from the tapering that extends radially outwardly into last pin thread adjacent with described base portion with adjacent first pin thread of described fore-end, a tubular type female coupling for being threaded with described male joint, described tubular type female coupling has axially extended internal thread between a radially inner interior shoulder and a radially outer female coupling surface, described tubular type female coupling comprises a reaming part between described internal thread and female coupling surface, described reaming partly defines a reaming cross-sectional area between footpath and its external diameter within it, and described female coupling defines one and is within described female coupling the female coupling cross-sectional area between footpath outside footpath and described female coupling a position of opening to relative spacing with respect to described interior shoulder and described female threaded shaft, described reaming cross-sectional area and front end cross-sectional area define a total cross-sectional area of 70% that is at least described female coupling cross-sectional area, and when described male joint is connected with female coupling, make under described female coupling surface and the mated condition of outer shoulder in plane engagement, so as at described male joint surperficial and interior shoulder before coordinating in the mode of plane engagement, make a prestrain effect of stress at described male joint and female coupling on the two with described last pin thread radially in the region of adjacency." although the technical scheme of this patent application improved the antitorque and flexural strength of threaded joints,, practice shows that sealing is still undesirable, threaded joints leakage problems happens occasionally.
Utility model content
The technical problems to be solved in the utility model is to provide the two shoulders sealing of a kind of pair of shoulder torsion resistant and bending resistant oil drilling tools threaded connection structure, and this syndeton is not only antitorque and flexural strength is high, and, greatly improved the sealing of threaded joints.
In order to solve the problems of the technologies described above, the two shoulder sealing of a kind of pair of shoulder torsion resistant and bending resistant of the present utility model oil drilling tools threaded connection structure, comprise male joint and female coupling, described male joint has end face and outer shoulder, and described female coupling has end face and interior shoulder, and the end face of described male joint is the interior butt conical surface, it is inner conical end face, correspondingly, the interior shoulder of described female coupling is the outer butt conical surface, i.e. shoulder in male-tapered; Or the end face of described male joint is the outer butt conical surface, i.e. male-tapered end face, correspondingly, the interior shoulder of described female coupling is the interior butt conical surface, i.e. shoulder in inner conical; In like manner, the end face of described female coupling is the interior butt conical surface, i.e. inner conical end face, and correspondingly, the outer shoulder of described male joint is the outer butt conical surface, i.e. the outer shoulder of male-tapered; Or the end face of described female coupling is the outer butt conical surface, i.e. male-tapered end face, correspondingly, the outer shoulder of described male joint is the interior butt conical surface, i.e. the outer shoulder of inner conical.
The cone angle of described male joint inner conical end face is less than or equal to the cone angle of shoulder in described female coupling male-tapered; Or the cone angle of described male joint male-tapered end face is more than or equal to the cone angle of the interior shoulder of inner conical of described female coupling; In like manner, the cone angle of described female coupling inner conical end face is less than or equal to the cone angle of the outer butt conical surface of outer shoulder of described male joint; Or the cone angle of described female coupling male-tapered end face is more than or equal to the cone angle of the outer shoulder of inner conical of described male joint.
The cone angle of described male joint inner conical end face is 160 °-178 °, and in described female coupling male-tapered, the cone angle of shoulder is 160 °-178 °; Or the cone angle of described male joint male-tapered end face is 160 °-178 °, in the inner conical of described female coupling, the cone angle of shoulder is 160 °-178 °; In like manner, the cone angle of described female coupling inner conical end face is 165 °-179 °, and the cone angle of the outer butt conical surface of outer shoulder of described male joint is 165 °-179 °; Or the cone angle of described female coupling male-tapered end face is 165 °-179 °, the cone angle of the outer shoulder of described male joint inner conical is 165 °-179 °.
The cone angle of described male joint inner conical end face is 162 °, and in described female coupling male-tapered, the cone angle of shoulder is 162 °; Or the cone angle of described male joint male-tapered end face is 162 °, in the inner conical of described female coupling, the cone angle of shoulder is 162 °; In like manner, the cone angle of described female coupling inner conical end face is 179 °, and the cone angle of the outer butt conical surface of outer shoulder of described male joint is 179 °; Or the cone angle of described female coupling male-tapered end face is 179 °, the cone angle of the outer shoulder of the inner conical of described male joint is 179 °.
Described male joint is tapered tread joint, and the tapering of described male joint is 1:16, and described female coupling is tapered tread joint, and the tapering of described female coupling is 1:16.
The tooth form of described male joint is trapezoidal, and the tooth form angle of described male joint is 62.5 °-65.5 °, and the pitch of described male joint is 7.257mm, and the length of described male joint is 198.03mm-198.13 mm; Correspondingly, the tooth form of described female coupling is trapezoidal, and the tooth form angle of described female coupling is 62.5 °-65.5 °, and the pitch of described female coupling is 7.257mm, and the length of described female coupling is 198.23mm-198.33 mm.
The tooth form angle of described male joint is 64 °, and the length of described male joint is 198.08 mm; Correspondingly, the tooth form angle of described female coupling is 64 °, and the length of described female coupling is 198.28mm.
The tooth form angle of described male joint is by through this tooth form angular vertex and perpendicular to the straight line decile of male joint axis; The tooth form angle of described female coupling is by through this tooth form angular vertex and perpendicular to the straight line decile of female coupling axis.
The of the present utility model pair of two shoulder sealing of shoulder torsion resistant and bending resistant oil drilling tools threaded connection structure compared with prior art has following beneficial effect.
1, the technical program is the interior butt conical surface owing to having adopted the end face of described male joint, correspondingly, the interior shoulder of described female coupling is the technological means of the outer butt conical surface, when the end face of described male joint and the interior shoulder interaction of described female coupling, not only produce axial force, but also produce radial effect power, make the end face of described male joint and the interior shoulder of described female coupling contact closelyr, so, not only improved the antitorque and flexural strength of male joint and female coupling connecting portion, and, improved the sealing between shoulder in male joint end face and female coupling.In like manner, owing to having adopted the end face of described female coupling, it is the interior butt conical surface, correspondingly, the outer shoulder of described male joint is the technological means of the outer butt conical surface, when the outer shoulder of described male joint and the interaction of the end face of described female coupling, not only produce axial force, but also produce radial effect power, make the outer shoulder of described male joint and the end contact of described female coupling obtain tightr, so, not only improved the antitorque and flexural strength of male joint and female coupling connecting portion, and, improved the sealing between the outer shoulder of male joint and female coupling end face.Like this, because two shoulders (outer shoulder and interior shoulder) all have good sealing, so, the antitorque and flexural strength of male joint and female coupling connecting portion not only improved widely, and, improved widely the sealing between the outer shoulder of male joint and female coupling end face.When adopting the end face of described male joint, it is the outer butt conical surface, correspondingly, the interior shoulder of described female coupling is the technological means of the interior butt conical surface, can improve equally the antitorque and flexural strength of male joint and female coupling connecting portion, improve the sealing between shoulder in male joint end face and female coupling.In like manner, when adopting the end face of described female coupling, it is the outer butt conical surface, correspondingly, the outer shoulder of described male joint is the technological means of the interior butt conical surface, can improve equally the antitorque and flexural strength of male joint and female coupling connecting portion, improve the sealing between the outer shoulder of male joint and female coupling end face.
2, the technical program is owing to having adopted the cone angle of described male joint inner conical end face to be less than or equal to the technological means of the cone angle of shoulder in described female coupling male-tapered, so, can further improve the sealing between shoulder in male joint end face and female coupling.In like manner, owing to having adopted the cone angle of described female coupling inner conical end face to be less than or equal to the technological means of cone angle of the outer butt conical surface of outer shoulder of described male joint, so, can further improve the sealing between the outer shoulder of male joint and female coupling end face.When adopting the cone angle of described male joint male-tapered end face to be more than or equal to the technological means of the cone angle of shoulder in the inner conical of described female coupling, can further improve equally the sealing between the interior shoulder of male joint end face and female coupling.In like manner, when adopting the cone angle of described female coupling male-tapered end face to be more than or equal to the technological means of cone angle of the outer shoulder of inner conical of described male joint, can further improve equally the male joint sealing between shoulder and female coupling end face outward.
3, the technical program is 160 °-178 ° owing to having adopted the cone angle of described male joint inner conical end face, in described female coupling male-tapered, the cone angle of shoulder is the technological means of 160 °-178 °, so, not only can further improve the sealing between shoulder in male joint end face and female coupling, and, can guarantee that male joint is not interrupted with being connected of female coupling.When adopting the cone angle of described male joint male-tapered end face, it is 160 °-178 °, in described female coupling inner conical, the cone angle of shoulder is the technological means of 160 °-178 °, can further improve equally the sealing between shoulder in male joint end face and female coupling, can guarantee that male joint is not interrupted with being connected of female coupling.In like manner, owing to having adopted the cone angle of described female coupling inner conical end face, it is 165 °-179 °, the cone angle of the outer butt conical surface of outer shoulder of described male joint is the technological means of 165 °-179 °, so, not only can further improve the sealing between the outer shoulder of male joint and female coupling end face, and, can guarantee that male joint is not interrupted with being connected of female coupling.When adopting the cone angle of described female coupling male-tapered end face, it is 165 °-179 °, the cone angle of the outer shoulder of described male joint inner conical is the technological means of 165 °-179 °, can further improve equally the sealing between the outer shoulder of male joint and female coupling end face, can guarantee that male joint is not interrupted with being connected of female coupling.
4, the technical program is 162 ° owing to having adopted the cone angle of described male joint inner conical end face, in described female coupling male-tapered, the cone angle of shoulder is the technological means of 162 °, so, can make the being tightly connected property of male joint and female coupling reach optimum state.When adopting the cone angle of described male joint male-tapered end face, be 162 °, in the inner conical of described female coupling, the cone angle of shoulder is the technological means of 162 °, can make being equally the tightly connected property of male joint and female coupling reach optimum state.In like manner, owing to having adopted the cone angle of described female coupling inner conical end face, it is 179 °, the cone angle of the outer butt conical surface of outer shoulder of described male joint is the technological means of 179 °, so, can make the being tightly connected property of male joint and female coupling reach optimum state.When adopting the cone angle of described female coupling male-tapered end face, be 179 °, the cone angle of the outer shoulder of inner conical of described male joint is the technological means of 179 °, can make being equally the tightly connected property of male joint and female coupling reach optimum state.
5, the technical program is taper thread owing to having adopted the screw thread of described male joint, the tapering of described male joint is 1:16, the screw thread of described female coupling is taper thread, the tapering of described female coupling is the technological means of 1:16, so Ke Yu API American Petroleum Institute (API) thread standard is compatible.
6, the technical program is trapezoidal owing to having adopted the tooth form of described male joint, the tooth form angle of described male joint is 62.5 °-65.5 °, the pitch of described male joint is 7.257mm, and the length of described male joint is 198.03mm-198.13 mm; Correspondingly, the tooth form of described female coupling is trapezoidal, the tooth form angle of described female coupling is 62.5 °-65.5 °, the pitch of described female coupling is 7.15mm, the length of described female coupling is the technological means of 198.23mm-198.33 mm, so moment of torsion increases more than 70% under the condition of same equal-specification compared with the screw thread of API standard, meanwhile, can reduce the pressure loss.Can make threaded joints form a rigid body.
7, the technical program is 64 ° owing to having adopted the tooth form angle of described male joint, and the length of described male joint is 198.08 mm; Correspondingly, the tooth form angle of described female coupling is 64 °, the technological means that the length of described female coupling is 198.28mm, so, can further improve the rigidity of threaded joints.
8, the technical program is because the tooth form angle that has adopted described male joint is by through this tooth form angular vertex and perpendicular to the straight line decile of male joint axis; The tooth form angle of described female coupling is by through this tooth form angular vertex and perpendicular to the technological means of the straight line decile of female coupling axis, so, not only be conducive to the installation between male joint and female coupling, and, also help the dismounting between male joint and female coupling.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the two shoulder sealing of of the present utility model pair of shoulder torsion resistant and bending resistant oil drilling tools threaded connection structure is described in further detail.
Fig. 1 is the structural representation of male joint in present embodiment.
Fig. 2 is the local structure for amplifying schematic diagram of pin thread 11 in Fig. 1.
Fig. 3 is that in Fig. 1, male joint end face 12 is the local structure for amplifying schematic diagram of the interior butt conical surface.
Fig. 4 is that in Fig. 1, male joint end face 12 is the local structure for amplifying schematic diagram of the outer butt conical surface.
Fig. 5 is that in Fig. 1, the outer shoulder 13 of male joint is the local structure for amplifying schematic diagram of the interior butt conical surface.
Fig. 6 is that in Fig. 1, the outer shoulder 13 of male joint is the local structure for amplifying schematic diagram of the outer butt conical surface.
Fig. 7 is the structural representation of female coupling in present embodiment.
Fig. 8 is the local structure for amplifying schematic diagram of negative thread 21 in Fig. 7.
Fig. 9 is that in Fig. 7, female coupling end face 22 is the local structure for amplifying schematic diagram of the interior butt conical surface.
Figure 10 is that in Fig. 7, female coupling end face 22 is the local structure for amplifying schematic diagram of the outer butt conical surface.
Figure 11 is that in Fig. 7, the interior shoulder 23 of female coupling is the local structure for amplifying schematic diagram of the interior butt conical surface.
Figure 12 is that in Fig. 7, the interior shoulder 23 of female coupling is the local structure for amplifying schematic diagram of the outer butt conical surface.
Figure 13 is the syndeton schematic diagram of male joint and female coupling in present embodiment.
The specific embodiment
As shown in figure 1 to figure 13, the utility model provides the two shoulder sealing of a kind of pair of shoulder torsion resistant and bending resistant oil drilling tools threaded connection structure, comprises male joint 1 and female coupling 2, and described oil drilling tools is connected and composed by multistage drilling rod.Described male joint 1 is positioned at one end of each section of drilling rod, and described female coupling 2 is positioned at the other end of each section of drilling rod.Described male joint 1, female coupling 2 and drilling rod have axial passage, and the male joint 1 of one section of drilling rod is connected with the female coupling 2 of another section of drilling rod.Described male joint 1 has end face 12 and outer shoulder 13, described female coupling 2 has end face 22 and interior shoulder 23, the end face 12 of described male joint 1 is the interior butt conical surface, be inner conical end face (referring to Fig. 3), correspondingly, the interior shoulder 23 of described female coupling 2 is the outer butt conical surface, i.e. shoulder (referring to Figure 12) in male-tapered; In like manner, the end face 22 of described female coupling 2 is the interior butt conical surface, i.e. inner conical end face (referring to Fig. 9), and correspondingly, the outer shoulder 13 of described male joint 1 is the outer butt conical surface, i.e. the outer shoulder (referring to Fig. 6) of male-tapered.Certainly, the end face 12 that can be also described male joint 1 is the outer butt conical surface, i.e. male-tapered end face (referring to Fig. 4), and correspondingly, the interior shoulder 23 of described female coupling 2 be the interior butt conical surface, i.e. the interior shoulder (referring to Figure 11) of inner conical; In like manner, the end face 22 that can be also described female coupling 2 is the outer butt conical surface, i.e. male-tapered end face (referring to Figure 10), and correspondingly, the outer shoulder 13 of described male joint 1 be the interior butt conical surface, i.e. inner conical shoulder (referring to Fig. 5) outward.
Present embodiment is the interior butt conical surface owing to having adopted the end face of described male joint, correspondingly, the interior shoulder of described female coupling is the technological means of the outer butt conical surface, when the end face of described male joint and the interior shoulder interaction of described female coupling, not only produce axial force, but also produce radial effect power, make the end face of described male joint and the interior shoulder of described female coupling contact closelyr, so, not only improved the antitorque and flexural strength of male joint and female coupling connecting portion, and, improved the sealing between shoulder in male joint end face and female coupling.In like manner, owing to having adopted the end face of described female coupling, it is the interior butt conical surface, correspondingly, the outer shoulder of described male joint is the technological means of the outer butt conical surface, when the outer shoulder of described male joint and the interaction of the end face of described female coupling, not only produce axial force, but also produce radial effect power, make the outer shoulder of described male joint and the end contact of described female coupling obtain tightr, so, not only improved the antitorque and flexural strength of male joint and female coupling connecting portion, and, improved the sealing between the outer shoulder of male joint and female coupling end face.Like this, because two shoulders (outer shoulder and interior shoulder) all have good sealing, so, the antitorque and flexural strength of male joint and female coupling connecting portion not only improved widely, and, improved widely the sealing between the outer shoulder of male joint and female coupling end face.When adopting the end face of described male joint, it is the outer butt conical surface, correspondingly, the interior shoulder of described female coupling is the technological means of the interior butt conical surface, can improve equally the antitorque and flexural strength of male joint and female coupling connecting portion, improve the sealing between shoulder in male joint end face and female coupling.In like manner, when adopting the end face of described female coupling, it is the outer butt conical surface, correspondingly, the outer shoulder of described male joint is the technological means of the interior butt conical surface, can improve equally the antitorque and flexural strength of male joint and female coupling connecting portion, improve the sealing between the outer shoulder of male joint and female coupling end face.In the torsion resistant and bending resistant of present embodiment, shoulder sealing oil drilling tools threaded connection structure is that a kind of THXT(closes ultrahigh anti-torsion bending resistance in sky as can be seen here) two shoulder sealing oil drilling tools threaded connection structures.
As a kind of improvement of present embodiment, as shown in Fig. 3 to Fig. 6, Fig. 9 to Figure 12, the cone angle of the inner conical end face of described male joint 1 is less than or equal to the cone angle of the interior shoulder of male-tapered of described female coupling 2; Certainly, can be also the cone angle that the cone angle of described male joint 1 male-tapered end face is more than or equal to shoulder in the inner conical of described female coupling 2; In like manner, the cone angle of the inner conical end face of described female coupling 2 is less than or equal to the cone angle of the outer shoulder of male-tapered of described male joint 1; Certainly, can be also the cone angle that the cone angle of described female coupling 2 male-tapered end faces is more than or equal to the outer shoulder of inner conical of described male joint 1.
Present embodiment is owing to having adopted the cone angle of described male joint inner conical end face to be less than or equal to the technological means of the cone angle of shoulder in described female coupling male-tapered, so, can further improve the sealing between shoulder in male joint end face and female coupling.In like manner, owing to having adopted the cone angle of described female coupling inner conical end face to be less than or equal to the technological means of cone angle of the outer butt conical surface of outer shoulder of described male joint, so, can further improve the sealing between the outer shoulder of male joint and female coupling end face.When adopting the cone angle of described male joint male-tapered end face to be more than or equal to the technological means of the cone angle of shoulder in the inner conical of described female coupling, can further improve equally the sealing between the interior shoulder of male joint end face and female coupling.In like manner, when adopting the cone angle of described female coupling male-tapered end face to be more than or equal to the technological means of cone angle of the outer shoulder of inner conical of described male joint, can further improve equally the male joint sealing between shoulder and female coupling end face outward.
As present embodiment, further improve, as shown in Fig. 3 to Fig. 6, Fig. 9 to Figure 12, the cone angle of the inner conical end face of described male joint 1 is 160 °-178 °, and in the male-tapered of described female coupling 2, the cone angle of shoulder is 160 °-178 °; Certainly, the cone angle that can be also described male joint 1 male-tapered end face is 160 °-178 °, and in the inner conical of described female coupling 2, the cone angle of shoulder is 160 °-178 °; In like manner, the cone angle of the inner conical end face of described female coupling 2 is 165 °-179 °, and the cone angle of the outer shoulder of male-tapered of described male joint 1 is 165 °-179 °; Certainly, the cone angle that can be also described female coupling 2 male-tapered end faces is 165 °-179 °, and the cone angle of the outer shoulder of described male joint 1 inner conical is 165 °-179 °.
Present embodiment is 160 °-178 ° owing to having adopted the cone angle of described male joint inner conical end face, in described female coupling male-tapered, the cone angle of shoulder is the technological means of 160 °-178 °, so, not only can further improve the sealing between shoulder in male joint end face and female coupling, and, can guarantee that male joint is not interrupted with being connected of female coupling.When adopting the cone angle of described male joint male-tapered end face, it is 160 °-178 °, in described female coupling inner conical, the cone angle of shoulder is the technological means of 160 °-178 °, can further improve equally the sealing between shoulder in male joint end face and female coupling, can guarantee that male joint is not interrupted with being connected of female coupling.In like manner, owing to having adopted the cone angle of described female coupling inner conical end face, it is 165 °-179 °, the cone angle of the outer butt conical surface of outer shoulder of described male joint is the technological means of 165 °-179 °, so, not only can further improve the sealing between the outer shoulder of male joint and female coupling end face, and, can guarantee that male joint is not interrupted with being connected of female coupling.When adopting the cone angle of described female coupling male-tapered end face, it is 165 °-179 °, the cone angle of the outer shoulder of described male joint inner conical is the technological means of 165 °-179 °, can further improve equally the sealing between the outer shoulder of male joint and female coupling end face, can guarantee that male joint is not interrupted with being connected of female coupling.
As present embodiment, further improve, as shown in Fig. 3 to Fig. 6, Fig. 9 to Figure 12, the cone angle of the inner conical end face of described male joint 1 is 162 °, and in the male-tapered of described female coupling 2, the cone angle of shoulder is 162 °; Certainly, the cone angle that can be also described male joint 1 male-tapered end face is 162 °, and in the inner conical of described female coupling 2, the cone angle of shoulder is 162 °; In like manner, the cone angle of the inner conical end face of described female coupling 2 is 179 °, and the cone angle of the outer shoulder of male-tapered of described male joint 1 is 179 °; Certainly, the cone angle that can be also described female coupling 1 male-tapered end face is 179 °, and the cone angle of the outer shoulder of inner conical of described male joint 1 is 179 °.
Present embodiment is 162 ° owing to having adopted the cone angle of described male joint inner conical end face, in described female coupling male-tapered, the cone angle of shoulder is the technological means of 162 °, so, can make the being tightly connected property of male joint and female coupling reach optimum state.When adopting the cone angle of described male joint male-tapered end face, be 162 °, in the inner conical of described female coupling, the cone angle of shoulder is the technological means of 162 °, can make being equally the tightly connected property of male joint and female coupling reach optimum state.In like manner, owing to having adopted the cone angle of described female coupling inner conical end face, it is 179 °, the cone angle of the outer butt conical surface of outer shoulder of described male joint is the technological means of 179 °, so, can make the being tightly connected property of male joint and female coupling reach optimum state.When adopting the cone angle of described female coupling male-tapered end face, be 179 °, the cone angle of the outer shoulder of inner conical of described male joint is the technological means of 179 °, can make being equally the tightly connected property of male joint and female coupling reach optimum state.
As present embodiment, also further improve, as shown in Figure 1 and Figure 7, described male joint 1 is tapered tread joint, and the tapering of described male joint 1 is 1:16, described female coupling 2 is tapered tread joint, and the tapering of described female coupling 2 is 1:16.
Present embodiment is taper thread owing to having adopted the screw thread of described male joint, the tapering of described male joint is 1:16, the screw thread of described female coupling is taper thread, the tapering of described female coupling is the technological means of 1:16, so Ke Yu API American Petroleum Institute (API) thread standard is compatible.
As present embodiment, further improve again, as shown in Figure 1, Figure 2, Figure 7 and Figure 8, the tooth form 11 of described male joint 1 is trapezoidal, the tooth form angle D1 of described male joint 1 is 62.5 °-65.5 °, the pitch b1 of described male joint 1 is 7.257mm, and the length a1 of described male joint 1 is 198.03mm-198.13 mm; Correspondingly, the tooth form 21 of described female coupling 2 is trapezoidal, and the tooth form angle D2 of described female coupling 2 is 62.5 °-65.5 °, and the pitch b2 of described female coupling 2 is 7.257mm, and the length a2 of described female coupling 2 is 198.23mm-198.33 mm.
Present embodiment is trapezoidal owing to having adopted the tooth form of described male joint, and the tooth form angle of described male joint is 62.5 °-65.5 °, and the pitch of described male joint is 7.257mm, and the length of described male joint is 198.03mm-198.13 mm; Correspondingly, the tooth form of described female coupling is trapezoidal, the tooth form angle of described female coupling is 62.5 °-65.5 °, the pitch of described female coupling is 7.15mm, the length of described female coupling is the technological means of 198.23mm-198.33 mm, so moment of torsion increases more than 70% under the condition of same equal-specification compared with the screw thread of API standard, meanwhile, can reduce the pressure loss.Can make threaded joints form a rigid body.
As present embodiment, further improve, as shown in Figure 1, Figure 2, Figure 7 and Figure 8, the tooth form angle D1 of described male joint 1 is 64 °, and the length a1 of described male joint 1 is 198.08 mm; Correspondingly, the tooth form angle D2 of described female coupling 2 is 64 °, and the length a2 of described female coupling 2 is 198.28mm.
Present embodiment is 64 ° owing to having adopted the tooth form angle of described male joint, and the length of described male joint is 198.08 mm; Correspondingly, the tooth form angle of described female coupling is 64 °, the technological means that the length of described female coupling is 198.28mm, so, can further improve the rigidity of threaded joints.
As present embodiment, further improve, as shown in Figure 2 and Figure 8, the tooth form angle D1 of described male joint 1 is by through this D1 summit, tooth form angle and perpendicular to the straight line decile of male joint 1 axis; The tooth form angle D2 of described female coupling 2 is by through this D2 summit, tooth form angle and perpendicular to the straight line decile of female coupling 2 axis.
Present embodiment is because the tooth form angle that has adopted described male joint is by through this tooth form angular vertex and perpendicular to the straight line decile of male joint axis; The tooth form angle of described female coupling is by through this tooth form angular vertex and perpendicular to the technological means of the straight line decile of female coupling axis, so, not only be conducive to the installation between male joint and female coupling, and, also help the dismounting between male joint and female coupling.
Claims (8)
1. the two shoulders of two shoulder torsion resistant and bending resistants seal oil drilling tools threaded connection structure, comprise male joint and female coupling, described male joint has end face and outer shoulder, described female coupling has end face and interior shoulder, it is characterized in that: the end face of described male joint is the interior butt conical surface, i.e. inner conical end face, correspondingly, the interior shoulder of described female coupling is the outer butt conical surface, i.e. shoulder in male-tapered; Or the end face of described male joint is the outer butt conical surface, i.e. male-tapered end face, correspondingly, the interior shoulder of described female coupling is the interior butt conical surface, i.e. shoulder in inner conical; In like manner, the end face of described female coupling is the interior butt conical surface, i.e. inner conical end face, and correspondingly, the outer shoulder of described male joint is the outer butt conical surface, i.e. the outer shoulder of male-tapered; Or the end face of described female coupling is the outer butt conical surface, i.e. male-tapered end face, correspondingly, the outer shoulder of described male joint is the interior butt conical surface, i.e. the outer shoulder of inner conical.
2. the according to claim 1 pair of two shoulder sealing of shoulder torsion resistant and bending resistant oil drilling tools threaded connection structure, is characterized in that: the cone angle of described male joint inner conical end face is less than or equal to the cone angle of shoulder in described female coupling male-tapered; Or the cone angle of described male joint male-tapered end face is more than or equal to the cone angle of the interior shoulder of inner conical of described female coupling; In like manner, the cone angle of described female coupling inner conical end face is less than or equal to the cone angle of the outer butt conical surface of outer shoulder of described male joint; Or the cone angle of described female coupling male-tapered end face is more than or equal to the cone angle of the outer shoulder of inner conical of described male joint.
3. the according to claim 2 pair of two shoulders of shoulder torsion resistant and bending resistant seal oil drilling tools threaded connection structure, it is characterized in that: the cone angle of described male joint inner conical end face is 160 °-178 °, in described female coupling male-tapered, the cone angle of shoulder is 160 °-178 °; Or the cone angle of described male joint male-tapered end face is 160 °-178 °, in the inner conical of described female coupling, the cone angle of shoulder is 160 °-178 °; In like manner, the cone angle of described female coupling inner conical end face is 165 °-179 °, and the cone angle of the outer butt conical surface of outer shoulder of described male joint is 165 °-179 °; Or the cone angle of described female coupling male-tapered end face is 165 °-179 °, the cone angle of the outer shoulder of described male joint inner conical is 165 °-179 °.
4. the according to claim 3 pair of two shoulder sealing of shoulder torsion resistant and bending resistant oil drilling tools threaded connection structure, is characterized in that: the cone angle of described male joint inner conical end face is 162 °, and in described female coupling male-tapered, the cone angle of shoulder is 162 °; Or the cone angle of described male joint male-tapered end face is 162 °, in the inner conical of described female coupling, the cone angle of shoulder is 162 °; In like manner, the cone angle of described female coupling inner conical end face is 179 °, and the cone angle of the outer butt conical surface of outer shoulder of described male joint is 179 °; Or the cone angle of described female coupling male-tapered end face is 179 °, the cone angle of the outer shoulder of the inner conical of described male joint is 179 °.
5. the according to claim 1 pair of two shoulders of shoulder torsion resistant and bending resistant seal oil drilling tools threaded connection structure, it is characterized in that: described male joint is tapered tread joint, the tapering of described male joint is 1:16, described female coupling is tapered tread joint, and the tapering of described female coupling is 1:16.
6. the according to claim 5 pair of two shoulders of shoulder torsion resistant and bending resistant seal oil drilling tools threaded connection structure, it is characterized in that: the tooth form of described male joint is trapezoidal, the tooth form angle of described male joint is 62.5 °-65.5 °, the pitch of described male joint is 7.257mm, and the length of described male joint is 198.03mm-198.13 mm; Correspondingly, the tooth form of described female coupling is trapezoidal, and the tooth form angle of described female coupling is 62.5 °-65.5 °, and the pitch of described female coupling is 7.257mm, and the length of described female coupling is 198.23mm-198.33 mm.
7. the according to claim 6 pair of two shoulder sealing of shoulder torsion resistant and bending resistant oil drilling tools threaded connection structure, is characterized in that: the tooth form angle of described male joint is 64 °, and the length of described male joint is 198.08 mm; Correspondingly, the tooth form angle of described female coupling is 64 °, and the length of described female coupling is 198.28mm.
8. the two shoulders sealing of according to claim 6 pair of shoulder torsion resistant and bending resistant oil drilling tools threaded connection structure, is characterized in that: the tooth form angle of described male joint is by through this tooth form angular vertex and perpendicular to the straight line decile of male joint axis; The tooth form angle of described female coupling is by through this tooth form angular vertex and perpendicular to the straight line decile of female coupling axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420315859.7U CN203905839U (en) | 2014-06-16 | 2014-06-16 | Double-ledge anti-torsion anti-bending petroleum drilling rig pipe threaded connecting structure with two ledges sealed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420315859.7U CN203905839U (en) | 2014-06-16 | 2014-06-16 | Double-ledge anti-torsion anti-bending petroleum drilling rig pipe threaded connecting structure with two ledges sealed |
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| Publication Number | Publication Date |
|---|---|
| CN203905839U true CN203905839U (en) | 2014-10-29 |
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| CN201420315859.7U Expired - Fee Related CN203905839U (en) | 2014-06-16 | 2014-06-16 | Double-ledge anti-torsion anti-bending petroleum drilling rig pipe threaded connecting structure with two ledges sealed |
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| CN (1) | CN203905839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002471A (en) * | 2014-12-19 | 2017-08-01 | 瓦卢瑞克石油天然气法国有限公司 | Threaded connector |
-
2014
- 2014-06-16 CN CN201420315859.7U patent/CN203905839U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002471A (en) * | 2014-12-19 | 2017-08-01 | 瓦卢瑞克石油天然气法国有限公司 | Threaded connector |
| US10407997B2 (en) | 2014-12-19 | 2019-09-10 | Vallourec Oil And Gas France | Threaded connection |
| CN107002471B (en) * | 2014-12-19 | 2020-08-21 | 瓦卢瑞克石油天然气法国有限公司 | Threaded connection |
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