CN209195281U - A kind of tool joint - Google Patents

Abstract

The utility model discloses a kind of tool joints, including female adapter, the shoulder being connect with female adapter one end, the male connection being connect with the shoulder other end, the outer surface of the female adapter is equipped with wear-resistant strip, the outer surface of the shoulder is equipped with the rib of several helically structures, the first groove is formed between the consecutive web, the utility model structure is simple, it is easy to use, the setting of female adapter outer surface wear-resistant strip, the wearability of tool joint can significantly be improved, the rib and groove of helical structure, the promotion of tool joint landwaste is set to provide interim power, avoid landwaste deposition, Anti-erosion wear resistance is strong, it can prevent drilling rod premature abrasion from failing, to extend Life of drill rod.

Description

A kind of tool joint

Technical field

The utility model relates to the drilling tools in a kind of petroleum, natural gas, coal bed gas, shale gas drilling process, specifically It is related to a kind of tool joint.

Background technique

Tool joint is the important component in oil gas drilling, jointed rod and drill bit, subject in drilling well stretching, The effect of the various alternating loads such as compression, torsion, bending and impact, inner hole installation position natural gamma, hole angle, resistance The electrical parts such as rate, pressure, battery, motor, are washed away and are corroded by cleaner for high-pressure drilling fluid, and operating condition is extremely complex, and operating condition is disliked It is bad, it generallys use both at home and abroad cover one layer of special wear-resistant strip of weldering in some position of tool joint to improve tool joint at present Wearability, however, due between wear-resistant strip and tool joint ontology material property difference it is big, it is poor to weld the latter two binding forces, by ring Border and human factor influence greatly, and crackle easy to form, wear-resisting carrying material is easy to happen local shedding in drilling well, leads to drilling rod connecting Head abrasion aggravation, in addition, drilling fluid carries a large amount of cutting grains through the annulus between ocean drilling rod and wellbore, internal surface of sleeve pipe On return to power resources Yu Haiyang's drilling rod inner flow passage pressure of earth's surface, when drilling fluid returns up, with the rising of height, pressure Power, which reduces fluid circulation rate, to be reduced.Therefore it is easy to happen landwaste deposition, increases offshore drill rod pressure, accelerates ocean drilling rod mill Damage, causes ocean drill rod breaking when serious, cause drilling failure, and drilling efficiency reduces, and drilling cost increases, and carries in drilling fluid The solid phases such as landwaste be easy blocking gas channel, when drilling liquid pressure is greater than strata pressure, drilling fluid is permeated to stratum, is less than ground The solid phases such as the landwaste of layer gas channel deeply, form blocking therewith, and pressure leakage stratum, so that drill bit is easy mud drum, piston is pulled out in trip-out, Induction blowout, lower brill cause pressure excited, cause leakage, final polluted reservoir, and a large amount of landwaste deposition can reduce power auger Speed.

Summary of the invention

The purpose of the utility model is to provide a kind of structure is simple, tool joint easy to use.

Purpose of the utility model is realized as follows:

A kind of tool joint, including female adapter, the shoulder being connect with female adapter one end, another with the shoulder The male connection of connection is held, the outer surface of the female adapter is equipped with wear-resistant strip, and the outer surface of the shoulder is equipped with several The helically rib of structure forms the first groove between the consecutive web.

The wear-resistant strip is equipped with several the second grooves to lower recess, and protrusion is equipped in second groove, described convex The deep equality of the height and second groove that rise.

The cross section of the rib is polygon, and the number of edges of the polygon is at least three.

The width of rib protrusion shoulder outer surface is 5-10mm, the width phase of first groove and the rib Together.

The external screw thread taper of the male connection is 1/6, base level pitch diameter 45.76mm, and the external thread length is 55mm。

The material of the female adapter and male connection uses high chromium, high manganese and high nitrogen low-carbon austenitic.

The wear-resistant strip model HF4000.

The beneficial effects of the utility model are: the utility model structure is simple, easy to use, female adapter outer surface is resistance to The setting of grinding belt, can significantly improve the wearability of tool joint, and the rib and groove of helical structure make tool joint landwaste Promotion interim power is provided, avoid landwaste deposition, Anti-erosion wear resistance is strong, can prevent drilling rod premature abrasion from failing, To extend Life of drill rod.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model shoulder；

Fig. 3 is the sectional view of the utility model wear-resistant strip；

In figure: female adapter 1, shoulder 2, male connection 3, rib 4, the first groove 5, wear-resistant strip 6, the second groove 7, Protrusion 8.

Specific embodiment

Below in conjunction with attached drawing, the utility model is described in further detail.

As depicted in figs. 1 and 2, a kind of tool joint, including female adapter 1, the shoulder being connect with 1 one end of female adapter The outer surface of platform 2, the male connection 3 connecting with 2 other end of shoulder, the female adapter 1 is equipped with wear-resistant strip 6, institute 6 model HF4000 of wear-resistant strip is stated, i.e. bottom outlet is bored on 6 surface of wear-resistant strip, and the cylindrical hard on female adapter surface is closed Gold bullion is inserted into the bottom outlet on 6 surface of wear-resistant strip, complete the insertion of wear-resistant strip 6, and wear-resistant strip 6 is equipped with several to lower recess Second groove 7, is equipped with protrusion 8 in second groove 7, the deep equality of raised 8 height and second groove 7, Raised 8 height and the depth of second groove 7 are 0.15mm, are had while proof strength compared with low friction system Number, can be improved the wearability of female adapter 1, and the outer surface of the shoulder 2 is equipped with the rib 4 of several helically structures, institute The cross section for stating rib 4 is quadrangle, forms the first groove 5, outer surface spiral shell of the rib 4 along shoulder 2 between the consecutive web 4 It revolves shape rotation to extend, the both ends of rib 4 extend respectively to the upper sideline and lower sideline of shoulder outer surface, between every two ribs 4 It is parallel to each other, is also parallel to each other between every two the first grooves 5, the width that the rib 4 protrudes 2 outer surface of shoulder is 5- 10mm, first groove 5 are of same size with the rib 4；When drilling fluid flows through tool joint, the first groove 5 can The drilling fluid at 2 position of shoulder of tool joints shunt and is classified as a plurality of fluids, to change the rock of same direction of flow The direction of motion of the solid phase particles such as bits, avoids butt joint shoulder 2 from causing local erosion, the drilling rod with rib 4 and the first groove 5 Flow field near 2 surface of connector shoulder is increasingly complex, and the disturbance of a plurality of fluids changes the movement velocity of the solid phase particles such as landwaste And angle, advantageously reduce joints wear；It is solid that the rib 4 and the first groove 5 that the shoulder 2 of tool joint is arranged can increase landwaste etc. The contact area of phase particle and shoulder 2 is strong to the erosion on ocean tool joint unit area so as to reduce the solid phases such as landwaste Degree.

The external screw thread taper of the male connection 2 is 1/6, base level pitch diameter 45.76mm, and the external thread length is The material of 55mm, the female adapter 1 and male connection 2 uses high chromium, high manganese and high nitrogen low-carbon austenitic, the Austria Its relative permeability of family name's body stainless steel is extremely low, provides weak magnetic space for directional drilling, drilling efficiency greatly improves.

The utility model structure is simple, easy to use, and the setting of female adapter outer surface wear-resistant strip can be improved significantly The wearability of tool joint, the rib and groove of helical structure, makes the promotion of tool joint landwaste provide interim power, keeps away Landwaste deposition is exempted from, Anti-erosion wear resistance is strong, can prevent drilling rod premature abrasion from failing, to extend Life of drill rod.

Claims (7)

1. a kind of tool joint, including female adapter, the shoulder being connect with female adapter one end and the shoulder other end The male connection of connection, it is characterised in that: the outer surface of the female adapter is equipped with wear-resistant strip, the outer surface of the shoulder Rib equipped with several helically structures forms the first groove between the consecutive web.

2. tool joint according to claim 1, it is characterised in that: the wear-resistant strip is equipped with several the to lower recess Two grooves, second groove is interior to be equipped with protrusion, the deep equality of the height of the protrusion and second groove.

3. tool joint according to claim 1, it is characterised in that: the cross section of the rib is polygon, described more The number of edges of side shape is at least three.

4. tool joint according to claim 1, it is characterised in that: the width of rib protrusion shoulder outer surface is 5- 10mm, first groove are of same size with the rib.

5. tool joint according to claim 1, it is characterised in that: the external screw thread taper of the male connection is 1/6, Base level pitch diameter is 45.76mm, and the external thread length is 55mm.

6. tool joint according to claim 1, it is characterised in that: the material of the female adapter and male connection Using high chromium, high manganese and high nitrogen low-carbon austenitic.

7. tool joint according to claim 2, it is characterised in that: the model HF4000 of the wear-resistant strip.