CN207583321U - The used drilling rod well logging target drill of drifting - Google Patents

Abstract

The utility model discloses a drill bit specially used for drilling through the drill pipe for well logging, which solves the problem that the existing drilling bit cannot meet the construction requirements of the drill pipe for well logging. Specifically, the center of the drill bit is hollowed out, and the pumping mechanism of the logging instrument is built in; during the drilling process, when the drilling reaches the specified layer and needs to be logged, the logging instrument is lowered from the wellhead, pumped to the top of the drill bit, and the anchored logging instrument is pumped out. At this time, the pump is turned on to circulate, the pumping mechanism of the logging instrument is pumped out with the logging instrument, and the logging instrument starts to measure. Through the drill bit, it is possible to carry out drilling pipe logging construction during drilling, reduce the number of trips, and reduce the impact of the borehole on the logging construction.

Description

The used drilling rod well logging target drill of drifting

Technical field

The utility model is related to a kind of Matching Bits in oil drilling, logging technique field, particularly cross drilling rod well logging The mating target drill of technology.

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, only can effectively solve the problem that by crossing drilling rod well logging construction The above problem, but conventional drilling rod of crossing is logged well because without dedicated drill bit, can only transfer well logging in drilling rod after finishing drilling drifting Instrument, so as to increase the number that makes a trip.

Invention content

In view of this, the utility model provides a kind of drifting used drilling rod well logging target drill, solves existing drifting drill bit The problem of can not achieve drilling rod well logging construction requirement by the drill bit, can realize that drilling rod well logging was carried out in drifting to be applied Work reduces the number that makes a trip, and reduces influence of the wellbore to well logging construction.

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

A kind of used drilling rod well logging target drill of drifting, including：

Drill body；

The drill body, nose threads connection drill bit steel core, rear end is threadedly coupled crossover sub；

The drill bit steel core, front end sintered bit carcass；

It is characterized in that：

In the drill body there is logger to pump out mechanism；

The logger pumps out mechanism, is anchored with logger in drilling rod, for after finishing drilling together with the logger It is pumped out from the drill body, the logger directly carries out logging operation.

Preferably, the logger pumps out mechanism, has tapered sleeve structure, and rear end is connect with crossover sub centre bore, bores The uniformly distributed several runners in the nested structure whole body, tapered sleeve structure front end are limited by bit matrix.

Preferably, the drill body, centre bore is interior to be equipped with step, and mechanism is pumped out for blocking logger.

Preferably, the confined planes of the bit matrix are inclined-plane, and the logger pumps out the tapered sleeve structure front end of mechanism For the conical surface, the inclined-plane is matched with the conical surface.

Preferably, the logger is pumped out mechanism and is connect with crossover sub using spline.

Preferably, the logger pumps out the mechanism whole body and is evenly distributed with 6 runners.

The beneficial effects of the utility model：The drill bit, which can be realized, carried out drilling rod well logging construction in drifting, reduced Lower brill number reduces influence of the wellbore to well logging construction, while ensureing well logging construction quality, avoids downhole safety accident and well The influence collapsed to logger reduces drilling 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 the structure diagram of the used drilling rod well logging target drill of drifting of the utility model embodiment.

Fig. 2 is that the logger of the utility model embodiment pumps out the structure diagram of mechanism.

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 the structure diagram of the used drilling rod well logging target drill of drifting of the utility model embodiment.By Fig. 1 institutes Show：

A kind of used drilling rod well logging target drill of drifting, including drill body 3；Drill body 3, nose threads connection drill bit Steel core 1, rear end are threadedly coupled crossover sub 5；1 front end sintered bit carcass 2 of drill bit steel core, 5 other end screw thread of crossover sub connect Connect portion's drilling tool；Also there is logger to pump out mechanism 4 in drill body 3；The logger pumps out mechanism 4, with being surveyed in drilling rod Well instrument is anchored, and for being pumped out from drill body 3 together with the logger after finishing drilling, logger can directly log well Operation.

Fig. 2 is that the logger of the utility model embodiment pumps out the structure diagram of mechanism.As shown in Fig. 1 and Fig. 2：It surveys Well instrument pumps out mechanism 4, has tapered sleeve structure, rear end is with crossover sub centre bore using spline connection mode, tapered sleeve structure week Body is evenly distributed with several runners, and tapered sleeve structure front end is limited by bit matrix 2.

Specifically, with reference to Fig. 1 and Fig. 2, the course of work of the utility model is briefly described：

The used drilling rod well logging target drill upper end connection top drilling tool of the drifting, during drifting, reaches purpose of horizon when boring It needs to start to pull out of hole when carrying out well logging construction, is put into logger inside well head drilling tool, installs and be anchored in logger front end Connector, when logger lowering velocity slows down, turn on pump pumping device, until anchored joint front end, pawl is lowered into logger Mechanism endoporus is pumped out, logger pumps out mechanism runner and blocked by logger at this time, pressure rise in drill bit, logger pump Go out the device front end conical surface and slip over bit matrix inclined-plane, pump out mechanism since anchored joint front end pawl locks logger at this time, Logger, which pumps out the mechanism conical surface and slides entirely over logger behind bit matrix inclined-plane, pumps out mechanism with anchored joint from brill It is gone out in head ontology 3, logger is all discharged from drill body endoporus, and logger proceeds by logging operation, and logs well Instrument pumps out mechanism and hangs over logger bottom always.

There is a step in 3 centre bore of drill body, block logger and pump out mechanism 4, when stratum reacts on drill steel When on core 1, to prevent pressure from pumping out the influence of mechanism 4 to logger, offset by 3 interior step of drill body.

Logger pumps out mechanism 4 and is evenly distributed with 6 runners all over the body, it is ensured that turn on pump circulating process, so as to complete drilling rod Logging technique.

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 special drill bit for well logging through drill pipe, including: drill body; The drill body is threaded at the front end to the steel core of the drill bit, and the rear end is threaded at the conversion joint; The drill bit steel core, the front end sintered bit matrix; It is characterized by: There is a logging instrument pumping mechanism inside the drill bit body; The well logging instrument pumping mechanism is anchored with the well logging instrument inside the drill pipe, and is used to pump out the well logging instrument together with the well logging instrument from the drill bit body after drilling, and the well logging instrument directly performs well logging operations. 2. The special drill bit for through-drill pipe logging for well passage according to claim 1, characterized in that: the pumping mechanism of the logging instrument has a taper sleeve structure, and the rear end is connected to the central hole of the conversion joint, and the taper sleeve structure A number of flow channels are evenly distributed around the body, and the front end of the tapered sleeve structure is limited by the drill bit matrix. 3. The special drill bit for through-drill pipe logging for well drilling according to claim 1, characterized in that: the drill bit body has a step in the central hole for clamping the pumping mechanism of the logging instrument. 4. The special drill bit for well logging through drill pipe according to claim 2, characterized in that: the limiting surface of the drill bit body is an inclined plane, and the front end of the taper sleeve structure of the pumping mechanism of the logging instrument is a tapered surface, and the inclined surface is matched with the tapered surface. 5. The through-drill pipe logging special drill bit for well drilling according to claim 2, characterized in that: the pumping mechanism of the logging instrument is connected to the conversion joint by a spline. 6. The through-drill pipe logging special drill bit for well drilling according to claim 2, characterized in that 6 flow channels are evenly distributed around the pumping mechanism of the logging instrument.