CN207598193U - The used drilling rod well logging composite drill bit of total cost management - Google Patents

Abstract

The utility model discloses a kind of total cost management used drilling rod well logging composite drill bit, solves conventional the problem of crossing drilling rod well logging because without dedicated drill bit, logger can only be transferred in drilling rod after finishing drilling drifting.Particularly there is a drill bit core in the steel core of drill bit, drill bit core and steel core creep into broken rock simultaneously during normal drilling, when brill needs well logging up to designated layer position, logger is transferred from well head, is pumped to above drill bit, is anchored drill bit core, turn on pump recycles at this time, pin is cut short, drill bit core is pumped out with logger, and logger starts to measure.So as to reduce the number that makes a trip, shorten and bore completion period, underground risk when reducing well logging.

Description

The used drilling rod well logging composite drill bit of total cost management

Technical field

The utility model is related to a kind of oil, gas drilling downhole tools.

Background technology

Latter period of oilfield development, exploration, development object become increasingly complex, horizontal well, it is three-dimensional around barrier well and extended reach well by Year increases；To reduce cost, improving benefit, protective casing shoals；It complexity, the severe hole condition such as misses, cave in, is expanding to increase；Well Eye track is complicated, and dog-leg severity is big.Cause logger that can not measure by above-mentioned reason, and by crossing drilling rod well logging construction energy It enough effectively solves the above problems, but conventional drilling rod of crossing is logged well because of no dedicated drill bit, it can only be after finishing drilling drifting in drilling rod Interior decentralization logger.

Invention content

In view of this, the utility model offer is a kind of crosses drilling rod well logging target drill, not only has the function of drilling well, but also can be complete It is not required to transfer logger in the case of drifting after brill, so as to reduce the number that makes a trip, shortens and bore completion period, when reducing well logging Underground risk.

For achieving the above object, the technical solution adopted in the utility model is：

A kind of used drilling rod well logging composite drill bit of total cost management, including：

Steel core；

The steel core front end is sintered crown；

Weld PDC composite sheets in the crown top；

The steel core rear end is connect with crossover sub；

The crossover sub other end connects top drilling tool；

It is characterized in that：

Drill bit core is connected in the steel core centre bore；

The drill bit core rotates synchronously broken rock with the steel core, after the logger is anchored the drill bit core, the brill Head core is pumped out together with the logger from the steel core, and the logger starts to measure.

Preferably, in the steel core centre bore there is step, removed for limiting the drill bit core from the steel core rear end.

Preferably, the drill bit core passes through interior external splines torsion pass with the steel core.

Preferably, the drill bit core, is connect between the steel core by pin.

Preferably, the drill bit core, both ends set sealing ring respectively, for protecting the pin by drilling fluid erosion.

Preferably, the drill bit core, rear end have inner hole structure, and the logger front end is equipped with anchored joint, institute The click-fit of inner hole structure and the anchored joint front end is stated, blocks the drill bit core runner.

The beneficial effects of the utility model：The used drilling rod well logging composite drill bit of the total cost management, can realize total cost management, Drilling rod well logging construction can be also carried out after drilling construction simultaneously, reduces the number that makes a trip, wellbore is reduced and constructs to well logging Influence, while ensureing well logging construction quality, avoid the influence of downhole safety accident and well slough to logger, reduce drilling well Period achievees the purpose that reduce cost, oil field development is had far-reaching significance.

Description of the drawings

By below with reference to description of the attached drawing to the utility model embodiment, the above-mentioned and other mesh of the utility model , feature and advantage it is apparent, in the accompanying drawings：

Fig. 1 is a kind of structure diagram of the used drilling rod well logging composite drill bit of total cost management of the utility model embodiment.

Fig. 2 is the structure diagram of the drill bit core of the utility model embodiment.

Specific embodiment

The utility model is described below based on embodiment, but what deserves to be explained is, the utility model is simultaneously unlimited In these embodiments.It is detailed to describe some specific detail sections below in the datail description of the utility model.So And for the part of no detailed description, those skilled in the art can also understand the utility model completely.

In addition, it should be understood by one skilled in the art that the attached drawing that is provided is simply to illustrate that the utility model Objects, features and advantages, attached drawing are not to be actually drawn to scale.

Meanwhile unless the context clearly requires otherwise, otherwise throughout the specification and claims " comprising ", "comprising" etc. Similar word should be construed to the meaning included rather than exclusive or exhaustive meaning；That is, it is " including but not limited to " Meaning.

Fig. 1 is a kind of structure diagram of the used drilling rod well logging composite drill bit of total cost management of the utility model embodiment. As shown in Figure 1：A kind of used drilling rod well logging composite drill bit of total cost management, including：

Steel core 4,4 front end of steel core sintering crown 2,2 top of crown welding PDC composite sheets 3；4 rear end of steel core and crossover sub 7 It is connected through a screw thread, is welded after connection in its end, 7 other end of crossover sub is threadedly coupled top drilling tool；In steel core 4 Heart hole is connected with drill bit core 1.

Fig. 2 is the structure diagram of the drill bit core of the utility model embodiment.Further, by Fig. 1 and Fig. 2, drill bit Core 1, surface have axial splines structure, are equipped in 4 endoporus of steel core with drill bit mandrel to the corresponding spline pair of spline structure；Steel 4 both ends of core have seal groove, built-in sealing ring；4 surface of steel core also has annular groove, and the rear end of steel core 4 has inner hole structure.

Further, in Fig. 1, drill bit core 1 removes 4 endoporus of steel core in steel core 4 to prevent drill bit core 1 from turning left from the right side, It being hung at 1 annular groove of drill bit core by pin 6, pin 6 is packed at 4 side wall of steel core, 6 holes, is blocked with silk plug 5, Prevent pin 6 from dropping out, drill bit core 1 is blocked in 6 one end of pin, and the other end is embedded in inside steel core 4.

Further, in Fig. 1, to realize that drill bit core 1 can not move from left to right, there is one in steel core inner radius Rank blocks drill bit core 1.

Further, in Fig. 1, respectively there are 2 road sealing grooves at 1 both ends of drill bit core, for pin 6 to be protected to be rushed by drilling fluid Erosion.

Further, in Fig. 1, drill bit core 1 and steel core 4 carry out torsion pass by interior external splines.

Specifically, the course of work of the utility model is illustrated with reference to Fig. 1：

The used drilling rod well logging composite drill bit of the total cost management, top drilling tool is connected by 7 upper end of crossover sub, normal to creep into When the drill bit steel core 4 and its inner bit core 6 rotate carry out broken rock simultaneously.

When bore up to purpose of horizon needs start pull out of hole carry out well logging construction when, logger front end install anchored joint 8, Logger is put into inside well head drilling tool, when logger lowering velocity slows down, turn on pump pumping device, until anchored joint 8 front end pawls are lowered into 1 endoporus of drill bit core, and 1 runner of drill bit core is blocked by logger at this time, pressure rise in drill bit, cut Pin 6 on drill bit, at this time since 8 front end pawl of anchored joint locks drill bit core 1, pin 6 is suppressed drill bit core 1 of having no progeny and is connect with anchoring First 8 go out out of drill bit steel core 4 together, and logger is all pumped out from 4 centre bore of steel core, and logger proceeds by well logging and makees Industry, and drill bit core 1 hangs over logger bottom always.

When stratum is reacted on drill bit core 1,4 interior step of steel core offsets the reaction force, prevents pressure to pin 6 Influence, protect pin 6.

Embodiment described above only expresses the embodiment of the utility model, and description is more specific and detailed, but simultaneously Cannot the limitation to the utility model patent range therefore be interpreted as.It should be pointed out that the ordinary skill people to this field For member, without departing from the concept of the premise utility, several deformations, equal replacement can also be made, improved etc., these Belong to the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.

Claims (6)

1. a kind of used drilling rod well logging composite drill bit of total cost management, including：

Steel core；

The steel core front end is sintered crown；

Weld PDC composite sheets in the crown top；

The steel core rear end is connect with crossover sub；

The crossover sub other end connects top drilling tool；

It is characterized in that：

Drill bit core is connected in the steel core centre bore；

The drill bit core rotates synchronously broken rock with the steel core, after logger is anchored the drill bit core, the drill bit core together with The logger is pumped out from the steel core, and the logger starts to measure.

2. the used drilling rod well logging composite drill bit of total cost management according to claim 1, it is characterised in that：

In the steel core centre bore there is step, removed for limiting the drill bit core from the steel core rear end.

3. the used drilling rod well logging composite drill bit of total cost management according to claim 1, it is characterised in that：

The drill bit core passes through interior external splines torsion pass with the steel core.

4. the used drilling rod well logging composite drill bit of total cost management according to claim 1, it is characterised in that：

The drill bit core, is connect between the steel core by pin.

5. the used drilling rod well logging composite drill bit of total cost management according to claim 4, it is characterised in that：

The drill bit core, both ends set sealing ring respectively, for protecting the pin by drilling fluid erosion.

6. the used drilling rod well logging composite drill bit of total cost management according to claim 1, it is characterised in that：

The drill bit core, rear end have inner hole structure, and the logger front end is equipped with anchored joint, the inner hole structure with The click-fit of the anchored joint front end blocks the drill bit core runner.