CN2583678Y

CN2583678Y - Well drilling slurry on line sampler

Info

Publication number: CN2583678Y
Application number: CN 02255873
Authority: CN
Inventors: 李联玮; 张卫; 刘志勤; 朱祥华
Original assignee: Geological Logging Co of Sinopec Shengli Petroleum Administration Bureau
Current assignee: Geological Logging Co of Sinopec Shengli Petroleum Administration Bureau
Priority date: 2002-12-07
Filing date: 2002-12-07
Publication date: 2003-10-29
Anticipated expiration: 2012-12-07

Abstract

The utility model relates to a well drilling slurry on-line sampler, which belongs to the technical field of on-line gasometry logging of well drilling slurry of petroleum geologic exploration. The well drilling slurry on-line sampler is composed of a mechanical part and an automatic control part, wherein, the mechanical part is composed of a drainage pipeline, eight electric ball-shaped valves, hoses, sampling tanks and overflow ports. The drainage pipeline is arranged on the uppermost part, and the bottom of the drainage pipeline is provided with eight slurry sampling ports which are respectively connected with the eight electric ball-shaped valves below the slurry sampling ports. An outlet below each electric ball-shaped valve is connected with a sampling tank through the hose, and the upper top part of each sampling tank is provided with the overflow port. The automatic control part is composed of a data server, an I/O control card, a relay card and an electric ball-shaped valve which are mutually connected in turn. Well drilling slurry samples can be automatically collected on-line by a sampling device according to set conditions, the slurry samples which are sampled can be exactly corresponding to the depth of well sections of an exploratory well, and thus the geologic conditions underground can be truly reflected. The utility model not only can be operated on-line separately, but also can be used by being connected with a comprehensive logging instrument.

Description

The drilling mud on-line sampler

(1) technical field

The utility model relates to the gas logging technology field in the petroleum geology exploration drilling process, particularly is a kind of drilling mud on-line sampler with the supporting application of on-line gas survey system for drilling mud.

(2) background technology

In the petroleum geology exploration drilling process, need to detect in real time the down-hole geological condition, it is very important to obtain the mud sample that contains down-hole formation information how in time, exactly.This mud sample is carried out assay, can judge that the down-hole has or not show of oil and gas, and hydrocarbon zone degree of depth, thickness etc.But, corrosivity big owing to drilling mud viscosity is strong, contain reasons such as gravel is many, still do not have the on-line automatic sampler of drilling mud both at home and abroad so far.Through retrieval, also find no relevant patent documentation.

(3) summary of the invention

The purpose of this utility model satisfies geology gas detection logging requirements of one's work with regard to being to provide a kind of sampler of can be supporting with on-line gas survey system for drilling mud, can in time and exactly gathering mud sample at situ of drilling well automatically.

Above-mentioned purpose is realized by following technical proposals:

This sampler comprises mechanical part and automatic control section.Its mechanical part is made up of drainage pipeline, electric ball valve, flexible pipe, sampling jar and overflow vent.The drainage pipeline is at topmost, the drainage BOP have a plurality of mud sample taps respectively a plurality of electric ball valves below it be connected.Outlet below each electric ball valve is all passed through a flexible pipe and is connected with a sampling jar.The upper top of each sampling jar has an overflow vent.Its automatic control section is made up of data server, I/O control card, relay card and electric ball valve, and is connected to each other successively.

Drainage pipeline in the above-mentioned drilling mud on-line sampler is rectangular annular two-way bus structure form.There are four mud sample taps on every limit, bottom, two long limits of its rectangular annular, and both sides are totally eight sample taps, and individual mud sample import is arranged at its right minor face bottom, and individual mud sample outlet is arranged at its left minor face bottom.Its mud sample import is connected with the online drainage system of mud, and its mud sample outlet is connected with the online degasifier of mud sample.This drainage pipeline adopts the stainless steel manufacturing.

This sampler can be gathered the drilling mud sample according to imposing a condition on time according to quantity automatically.The mud sample of being gathered can be accurately corresponding with the well section degree of depth of prospect pit, can reflect the down-hole geological condition truly.This sampler both can work online separately, also can with the comprehensive logging instrument use that links, automaticity height, and withstand corrosion, serviceable life is longer.

(4) description of drawings

Accompanying drawing 1 is a mechanical part architectural feature synoptic diagram of the present utility model.

Accompanying drawing 2 is that the A of Fig. 1 is to view.

Accompanying drawing 3 is automatic control section functional-block diagrams of the present utility model.

In the accompanying drawing 1,2, the 1st, drainage pipeline, the 2nd, electric ball valve, the 3rd, flexible pipe, the 4th, overflow vent, the 5th, sampling jar.

(5) embodiment

As shown in Figure 1, 2, the mechanical part of this sampler is made up of drainage pipeline 1, eight electric ball valves 2, eight flexible pipes 3 and eight sampling jars 5 and overflow vent 4 thereof.Drainage pipeline 1 is at topmost, the drainage BOP have eight mud sample taps respectively eight electric ball valves 2 below it be connected.Outlet below each electric ball valve 2 is all passed through a flexible pipe 3 and is connected with a sampling jar 5.The upper top of each sampling jar 5 has an overflow vent 4.Its drainage pipeline 1 is rectangular annular two-way bus structure form.Individual mud sample import is arranged at the right minor face bottom of drainage pipeline 1, is connected with the online drainage system of mud; Individual mud sample outlet is arranged at minor face bottom, a left side, is connected with the online degasifier of mud sample.

As shown in Figure 3, the automatic control section of this sampler is made up of data server, I/O control card, relay card and electric ball valve 2, and is connected to each other successively.

The trend of work of this sampler is: before the work, setting needs the survey of the gas of unusual (show of oil and gas is arranged) sampling to show threshold value, sets the interval well depth that needs sampling, and setting spherical valve 2 is from being opened to the time of shutoff.In the course of work, data server SERVER constantly reads from the chromatographic real-time gas of HP and surveys data, and compares with the gas survey threshold value of establishing in advance, in case the gas measured value surpasses setting value, data server SERVER sends control signal to the I/O control card, and SERVER picks up counting simultaneously.The I/O control card sends control signal to the relay card, after relay snaps fit onto order, to switching signal of electric ball valve 2 outputs.After spherical valve 2 was opened, mud sample flow to sampling jar 5 via flexible pipe 3.Sampling jar has been expired, and unnecessary mud is discharged by overflow vent 4, and the air in flexible pipe 3, the sampling jar 5 is extruded.In case after the SERVER timing reached setting value, SERVER sent the shutoff that control signal makes electric ball valve 2.So just finish the process of a unusual sampling.Meanwhile, SERVER constantly reads the well depth signal from comprehensive logging instrument, when its finds that well depth meets the condition of interval well depth sampling of prior setting, sends control signal to the I/O control card, and its process is with the process of unusual sampling.

Claims

1. drilling mud on-line sampler, comprise mechanical part and automatic control section, it is characterized in that mechanical part is by drainage pipeline (1), electric ball valve (2), flexible pipe (3), sampling jar (5) and overflow vent (4) are formed, drainage pipeline (1) is at topmost, the drainage BOP have a plurality of mud sample taps respectively a plurality of electric ball valves (2) below it be connected, outlet below each electric ball valve (2) is all passed through a flexible pipe (3) and is connected with a sampling jar (5), the upper top of each sampling jar (5) has an overflow vent (4), its automatic control section is by data server, the I/O control card, relay card and electric ball valve (2) are formed, and are connected to each other successively.

2. drilling mud on-line sampler according to claim 1, it is characterized in that drainage pipeline (1) is rectangular annular two-way bus structure form, there are four mud sample taps on every limit, bottom, two long limits of its rectangular annular, both sides are totally eight sample taps, individual mud sample import is arranged at its right minor face bottom, individual mud sample outlet is arranged at its left minor face bottom, its mud sample import is connected with the online drainage system of mud, its mud sample outlet is connected with the online degasifier of mud sample, and this drainage pipeline adopts the stainless steel manufacturing.