CN201650275U

CN201650275U - Litho-density logging tool

Info

Publication number: CN201650275U
Application number: CN2009202201211U
Authority: CN
Inventors: 高怀雪; 黄文帜
Original assignee: BEIJING GI BO-RAN SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: Ji AI (Tianjin) Petroleum Engineering Co., Ltd.
Priority date: 2009-10-26
Filing date: 2009-10-26
Publication date: 2010-11-24
Anticipated expiration: 2019-10-26

Abstract

The utility model relates to a litho-density logging tool, which comprises a ground system, an electronic signal processing circuit and a probe, wherein the electronic signal processing circuit is used for receiving instructs of the ground system, and the probe mounted on a sidewall contact device is used for emitting gamma ray to detect formation rock performance under control of the electronic signal processing circuit. Besides, the electronic signal processing circuit is provided with a communication circuit module mounted in a heat absorber of a thermo flask, and utilizes a switch power supply. The stability and the high-temperature resistance of the litho-density logging tool can be increased.

Description

Litho-density tool

Technical field

The utility model relates to a kind of instrument of measuring formation lithology and density, particularly is used for the litho-density tool of the exploration and development of petroleum and natural gas.

Background technology

At present, being used for the litho-density tool of oil well logging, at first is to utilize isotope to stratum radiation gamma ray, utilizes probe to measure intensity through the gamma ray of stratum scattering and absorption again.Then, according to photoelectric absorption and the Compton-Woo effect that Compton-Wu has instruction scattered gamma rays and stratum to act on, measure the rock property and the rock density on stratum simultaneously.But because drilling environment is very abominable, survey and instrument will be worked under the condition of HTHP usually.At present, both at home and abroad on all densilog instruments, be to use linear power supply more, the linear power supply power device is operated in linear condition, that is to say that one to use power device be exactly to work always for he, so also just cause his inefficiency, generally 40%～50%, exhaustless electric energy has all converted heat energy to, also very big fin will be installed.From this view point, the efficient of linear power supply is just very low, and heat is high the time, and the life-span of element certainly will will descend, and influences final result of use.The working method of linear power supply makes him from high voltage variable low pressure dropping equipment must be arranged, and general all is transformer, again through the over commutation output dc voltage.So his volume is also just very big, heaviness, and efficient is low, calorific value is also big.

Summary of the invention

In order to overcome above problem, the utility model provides a kind of litho-density tool, and it adopts Switching Power Supply, can well address the above problem.

Above-mentioned purpose of the present utility model is achieved in that a kind of litho-density tool, comprising:

Ground system;

The electronic signal process circuit is used to receive the ground system instruction;

Be installed in the probe on the telescoping ram, be used under the control of electronic signal process circuit, launching gamma ray, survey the formation rock performance.

Wherein, the electronic signal process circuit has the communication circuit module in the absorber that is contained in vacuum flask.

Wherein, the power supply of described electronic signal process circuit use is a Switching Power Supply.

In sum, the utlity model has the stability that can improve logger and the technique effect of resistance to elevated temperatures.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the litho-density tool schematic diagram;

Fig. 2 is the vacuum flask structural representation;

Fig. 3 a is an absorber schematic diagram under the vacuum flask;

Fig. 3 b is the B-B sectional view of Fig. 3 a;

Fig. 3 c is the A-A sectional view of Fig. 3 a;

Fig. 4 a is an absorber schematic diagram on the vacuum flask;

The right view of Fig. 4 b Fig. 4 a.

The specific embodiment

With reference to Fig. 1, litho-density tool of the present utility model is main, comprising: ground system; The electronic signal process circuit is used to receive the ground system instruction; Be installed in the probe on the telescoping ram, be used under the control of electronic signal process circuit, launching gamma ray, survey the formation rock performance.

In addition, electronic signal process circuit 4 of the present utility model has the interior communication circuit module of absorber of the vacuum flask of packing into.

In addition, the power supply of electronic signal process circuit use of the present utility model is a Switching Power Supply.

The utility model is described in further detail below in conjunction with accompanying drawing, and the M2 in its Chinese is a model of the present utility model, do not have the particular technology implication.

Litho-density tool mainly is made up of probe 6, electronic signal process circuit 4, telescoping ram 5 three parts.The electronic signal process circuit comprises that the M2 communication module is packed into to be gone up absorber and is screwed, and then switch power module is fixed on down in the absorber, and absorber is fixed up and down again, puts into vacuum flask and encapsulates.It is by logging cable 2, transfer of data pipe nipple 3 order of plane system 1 responsively, the work of control logging instrument, the collection, high voltage control, door adjustment, the data that realize valid data send and control PHA plate, and upload gamma energy spectrum and other lithological information.Litho-density tool can directly be articulated on 5700 ground systems.Probe 6 is installed on the telescoping ram 5, and telescoping ram 5 is tightly pushed probe 6 to the borehole wall during well logging.

Among Fig. 2, the vacuum flask internal construction is upper shell 21, storehouse, source 22, window 23, vacuum flask 24, vacuum flask base 25, shield 26, lower house 27, circuit board 28, vacuum flask plug 29.

The vacuum flask absorber, but instrument is down to the shaft bottom, can be subjected to the Effect of Hyperthermic Environment of down-hole, vacuum flask has stopped most heat as first heat-proof device, and the heat seldom that enters vacuum flask just needs absorber to absorb, thereby further reduce the vacuum flask internal temperature, keep the electronic signal process circuit can be operated in proper temperature environment, simultaneously, absorber has also played the effect of permanent circuit.

In an instantiation, at first the M2 vacuum flask base is screwed on last shell, then the M2 communication circuit module is fixed on the vacuum flask in the absorber, Switching Power Supply is fixed on down in the vacuum flask absorber, both connect by high temperature wire, the M2 communication circuit module has the communication line of two 14 core high temperature wires, be connected to high temperature plug and high temperature socket, the negative probe that connects of high temperature plug, the data of duty receiving transducer, send the land cable that the high temperature socket connects to via the M2 communication circuit module, absorber is encapsulated in the vacuum flask by screw together then up and down.This Switching Power Supply power is little, the efficient height, voltage range between 65v-250v, broadband 45-70hz.

Although above the utility model is had been described in detail, the utility model is not limited thereto, and those skilled in the art of the present technique can carry out various modifications according to principle of the present utility model.Therefore, all modifications of being done according to the utility model principle all should be understood to fall into protection domain of the present utility model.

Claims

1. a litho-density tool is characterized in that, comprising:

Ground system (1);

Electronic signal process circuit (4) is used to receive ground system (1) instruction;

Be installed in the probe (6) on the telescoping ram (5), be used for emission gamma ray under electronic signal process circuit (4) control, survey the formation rock performance.

2. litho-density tool according to claim 1 is characterized in that, electronic signal process circuit (4) has the interior communication circuit module of absorber of the vacuum flask of packing into.

3. litho-density tool according to claim 1 is characterized in that, the power supply that described electronic signal process circuit uses is a Switching Power Supply.