Drilling rock debris sampling system

Abstract

The utility model relates to the technical field of well drilling, and provides a well drilling rock debris sampling system which comprises a first vibrating screen, a slurry recycling tank, a stirring and cleaning tank, a second vibrating screen, a settling tank and a packaging and ink-jet printing machine. The slurry recovery tank is arranged below the first vibrating screen and used for receiving slurry separated by the first vibrating screen, and the stirring and cleaning tank is arranged at the outlet end of the first vibrating screen and used for stirring and cleaning rock debris separated by the first vibrating screen and connected with the inlet end of the second vibrating screen through a second mortar pump. The settling tank is arranged below the second vibrating screen and used for receiving liquid separated by the second vibrating screen and separating clear water through settling, the clear water separated by the settling tank enters the stirring and cleaning tank through a clear water pump, and the packaging and ink-jet printing machine is connected with the outlet end of the second vibrating screen. And the rock debris sampling efficiency and the accuracy of subsequent geological analysis are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a drilling technology field, specifically, relate to a drilling rock debris sampling system. BACKGROUND

[0002] Rock debris logging is a method of collecting underground rock information during drilling. When the drill bit breaks the underground rock, these rock fragments rise to the ground with the drilling fluid, called rock debris. Geologists collect and observe these rock debris continuously according to specific sampling intervals and delays to restore the underground geological profile and understand the formation changes and lithological characteristics.

[0003] Rock debris logging has the advantages of low cost, simple operation, timely access to underground information, and strong systematicness of data, and therefore is widely used in the exploration and development process of oil and gas fields. Through rock debris logging, engineers can timely master the underground situation and provide important geological data for drilling engineering, thereby helping to develop effective exploration and development plans.

[0004] Currently, the working process of rock debris logging includes steps such as fishing, cleaning, marking, and packaging, and mainly relies on manual operation. This method has the disadvantages of high labor intensity, high personnel demand, high risk coefficient, and high cost. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a drilling rock debris sampling system, which solves the problems of high labor intensity, high personnel demand, high risk coefficient, and high cost in the existing rock debris logging.

[0006] The utility model realizes the following technical scheme: a drilling rock debris sampling system, which comprises a first vibrating screen, a mud recovery tank, a stirring and cleaning tank, a second vibrating screen, a settling tank, and a packaging and code spraying machine. The first vibrating screen inlet end is communicated with a mud tank through a first sand pump. The mud recovery tank is arranged below the first vibrating screen and is used for receiving the mud separated by the first vibrating screen. The stirring and cleaning tank is arranged at the outlet end of the first vibrating screen and is used for stirring and cleaning the rock debris separated by the first vibrating screen. The stirring and cleaning tank is connected with the second vibrating screen inlet end through a second sand pump. The settling tank is arranged below the second vibrating screen and is used for receiving the liquid separated by the second vibrating screen and settling to separate clean water. The clean water separated by the settling tank enters the stirring and cleaning tank through a clean water pump. The packaging and code spraying machine is connected with the outlet end of the second vibrating screen.

[0007] Further, the mud recovery tank is communicated with a circulating pool through a third mud pump. The circulating pool is communicated with a wellhead through a mud tank.

[0008] Further, the inner cavity of the settling tank is divided into a settling cavity and a clean water cavity by an overflow plate. The settling cavity and the clean water cavity are communicated at the upper parts.

[0009] Preferably, the sedimentation tank is provided with a blowdown valve at the bottom of the sedimentation chamber.

[0010] Further, an anti-explosion stirrer is arranged on the stirring and cleaning tank.

[0011] The drilling rock sample system has at least the following advantages and beneficial effects.

[0012] The cooperation of the first vibrating screen, the mud recovery tank, the stirring and cleaning tank, the second vibrating screen, the sedimentation tank and the packing and code spraying machine can conveniently obtain clean rock sample, reduce the labor intensity of the operator, reduce the personnel error factor, and improve the efficiency of rock sample and the accuracy of subsequent geological analysis. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The drilling rock sample system has at least the following advantages and beneficial effects.

[0014] Reference signs: 1 - first vibrating screen, 2 - mud recovery tank, 3 - stirring and cleaning tank, 4 - second vibrating screen, 5 - sedimentation tank, 51 - overflow plate, 52 - sedimentation chamber, 53 - clean water chamber, 6 - packing and code spraying machine, 7 - first mortar pump, 8 - second mortar pump, 9 - third mud, 10 - clean water pump, 11 - circulating pool, 12 - wellhead. DETAILED DESCRIPTION

[0015] The specific embodiments are described below in conjunction with the accompanying drawings.

[0016] Embodiment

[0017] As Figure 1As shown, in the embodiment, a drilling rock sample system is mainly disclosed, and the main structure thereof comprises a first vibrating screen 1, a mud recovery tank 2, a stirring cleaning tank 3, a second vibrating screen 4, a settling tank 5 and a packing and code spraying machine 6; wherein the first vibrating screen 1 is communicated with a mud tank through a first sand pump 7 at an inlet end, the mud recovery tank 2 is arranged below the first vibrating screen 1 and used for receiving mud separated by the first vibrating screen 1, the stirring cleaning tank 3 is arranged at an outlet end of the first vibrating screen 1 and used for stirring and cleaning rock separated by the first vibrating screen 1, the stirring cleaning tank 3 is connected with an inlet end of the second vibrating screen 4 through a second sand pump 8, the settling tank 5 is arranged below the second vibrating screen 4 and used for receiving liquid separated by the second vibrating screen 4 and settling clean water, the clean water separated by the settling tank 5 is pumped into the stirring cleaning tank 3 through a clean water pump 10, and the packing and code spraying machine 6 is connected with an outlet end of the second vibrating screen 4. Specifically, mud containing drilling rock is sucked into the first vibrating screen 1 through the first sand pump 7, and is subjected to preliminary screening, the separated mud falls into the mud recovery tank 2 through a bottom screen of the first vibrating screen 1 and is temporarily stored, and the separated rock is still wrapped with a large amount of mud, falls into the stirring cleaning tank 3 from an outlet end of the first vibrating screen 1, the stirring cleaning tank 3 contains clean water, and the rock and the wrapped mud are fully separated through stirring, the second sand pump 8 sucks the settled solid-liquid mixture containing rock into the second vibrating screen 4, and further realizes solid-liquid separation, the liquid falls into the settling tank 5 below the second vibrating screen 4 through a bottom screen of the second vibrating screen 4, and is settled to separate clean water, the clean water is sucked into the stirring cleaning tank 3 through the clean water pump 10, and provides circulating clean water for the stirring cleaning tank 3, the rock separated by the second vibrating screen 4 falls into the packing and code spraying machine 6 from an outlet end of the second vibrating screen 4, is packed, and information such as drilling depth and packing time is sprayed and printed. The packing and code spraying machine 6 can adopt a vertical packing machine combined with a code sprayer in the prior art, and is controlled and processed through a preset program. The system is convenient to operate, can obtain clean rock samples, reduces labor intensity of workers, reduces factors of personnel errors, and improves efficiency of rock sampling and accuracy of subsequent geological analysis.

[0018] In addition, the system can be wholly carried on a self-propelled caterpillar truck, and automatic sampling and separation can be performed at multiple positions.

[0019] Further, in the embodiment, the mud recovery tank 2 is communicated with a circulating pool 11 through a third mud pump 9, and the circulating pool 11 is communicated with a wellhead 12 through a mud tank. It should be noted that mud containing rock flows from the wellhead 12 to the circulating pool 11 through the mud tank, and when sampling, the first sand pump 7 is used to sample the mud tank rich in rock, so that a representative sample can be obtained. The mud separated by the first vibrating screen 1 is discharged from the mud recovery tank 2 to the circulating pool 11 through a valve pipeline, so as to avoid pollution to the environment.

[0020] Further, in specific implementation, the inner cavity of the settling tank 5 is divided into a settling cavity 52 and a clean water cavity 53 by the overflow plate 51, and the settling cavity 52 is in communication with the upper part of the clean water cavity 53. The settling tank 5 can effectively separate the solid and clean water in the liquid by using the principle of gravity settling.

[0021] Preferably, the settling tank 5 is provided with a blowdown valve at the bottom of the settling cavity 52. The blowdown valve can conveniently discharge the sediment regularly, keep the inside of the equipment clean, and improve the overall operation efficiency of the equipment.

[0022] Further, in specific implementation, the above-mentioned stirring and cleaning tank 3 is provided with an anti-explosion stirrer, which is used to stir the rock debris in the stirring and cleaning tank 3.

Claims

1. A drilling cuttings sampling system, characterized in that, The mud recycling tank (2), the stirring and cleaning tank (3), the second vibrating screen (4), the settling tank (5) and the packing and code spraying machine (6) are arranged in sequence. The first vibrating screen (1) is communicated with a mud tank through a first sand pump (7) at an inlet end, the mud recycling tank (2) is arranged below the first vibrating screen (1) to receive the mud separated by the first vibrating screen (1), the stirring and cleaning tank (3) is arranged at an outlet end of the first vibrating screen (1) to stir and clean the cuttings separated by the first vibrating screen (1), the stirring and cleaning tank (3) is connected with the second vibrating screen (4) at an inlet end through a second sand pump (8), the settling tank (5) is arranged below the second vibrating screen (4) to receive the liquid separated by the second vibrating screen (4) and to separate clean water, the clean water separated by the settling tank (5) is pumped into the stirring and cleaning tank (3) through a clean water pump (10), and the packing and code spraying machine (6) is connected with an outlet end of the second vibrating screen (4).

2. A system for sampling drilling cuttings according to claim 1, wherein, The mud recycling tank (2) is communicated with a circulating pool (11) through a third mud pump (9), and the circulating pool (11) is communicated with a wellhead (12) through the mud tank.

3. A system for sampling drilling cuttings according to claim 1, wherein, An inner cavity of the settling tank (5) is divided into a settling cavity (52) and a clean water cavity (53) by an overflow plate (51), and the settling cavity (52) is communicated with an upper portion of the clean water cavity (53).

4. A system for sampling drilling cuttings according to claim 3, wherein, A sewage valve is arranged at a bottom of the settling cavity (52) of the settling tank (5).

5. A system for sampling drilling cuttings according to claim 1, wherein, An anti-explosion stirrer is arranged on the stirring and cleaning tank (3).

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