Storage tank system for comprehensive treatment of drilling cuttings

Abstract

The utility model relates to the technical field of drilling cuttings treatment, and discloses a storage tank system for comprehensive treatment of drilling cuttings, which comprises a drilling cuttings receiving unit configured to receive drilling cuttings of at least one drilling development site in a centralized manner and store the drilling cuttings in a single round; the drilling cuttings screening and outputting unit is configured to receive the drilling cuttings of at least one drilling development site for screening and flowing storage; wherein a discharge port of the drilling cuttings receiving unit is in butt joint with a feed port of the drilling cuttings screening and outputting unit. The waste drilling cuttings in a plurality of drilling development sites can be centrally stored at one time.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling cuttings, in particular to a storage tank system for comprehensive processing of drilling cuttings. Background Art

[0002] In the process of oil and gas exploration and development, with the strengthening of environmental protection awareness, wastes such as drilling cuttings generated during drilling are receiving more and more attention. Drilling cuttings are the primary minerals of the formation that are broken by the drill bit during drilling and carried back to the surface through the mud circulation system. Drilling cuttings are the main solid waste generated during drilling. Drilling an oil well generates hundreds of cubic meters of drilling cuttings. The drilling cuttings generated by drilling in an oil field can reach hundreds of thousands of cubic meters per year. The discharge of untreated drilling cuttings will cause great potential harm to the surrounding environment, especially farmland.

[0003] At present, the drilling mud used in China is mainly water-based drilling mud. The drilling cuttings produced are mainly fine particles of primary minerals in the formation. The particle size composition of the solid phase particles is mostly in the range of 400 mesh to several millimeters. The particles are small, the grading difference is large, and there is a certain viscosity; its water content is generally between 30% and 90%, and it is in a viscous fluid or clay-like solid state.

[0004] Therefore, for the drilling cuttings generated during water-based drilling, our company's commonly used treatment methods are as follows: First, install various equipment for processing waste drilling cuttings at each drilling development site, and then recover the filtered water through screening or sedimentation and reuse it, and the solid drilling cuttings generated are simply dehydrated and solidified, and finally transported to the recycling plant for recycling. Although the above methods can harmlessly treat the drilling cuttings entering each drilling open site, before processing the drilling cuttings, it is necessary to spend manpower costs to install various equipment for processing waste drilling cuttings in the drilling open site, which not only increases labor costs, but also reduces the efficiency of processing waste drilling cuttings.

[0005] In order to solve the above technical problems, our company adopts a centralized processing method to transport waste drilling cuttings from multiple drilling development sites to a centralized site for processing. However, during the implementation process, our company found that when the amount of waste drilling cuttings is too large, the containers used to store waste drilling cuttings at the centralized site cannot be stored at one time, resulting in the excess waste drilling cuttings being unable to be processed in a timely manner. Utility Model Content

[0006] The utility model aims to provide a storage tank system for comprehensive processing of drilling cuttings, which can centrally store the discarded drilling cuttings from multiple drilling development sites at one time.

[0007] To achieve the above objectives, various aspects of the present application can be implemented in one or more of the following embodiments:

[0008] 1) Storage tank system for comprehensive processing of drilling cuttings, including:

[0009] a drilling cuttings receiving unit configured to centrally receive drilling cuttings from at least one drilling development site and store them in a single round;

[0010] A drilling cuttings screening and output unit is configured to receive drilling cuttings from at least one drilling development site for screening and mobile storage;

[0011] Wherein, the discharge port of the drilling cuttings receiving unit is connected with the feed port of the drilling cuttings screening and output unit.

[0012] When the utility model is in use, when the discharge port of the drilling cuttings receiving unit is docked with the feed port of the drilling cuttings screening output unit, the drilling cuttings received by the drilling cuttings receiving unit are stored in a single round, and the drilling cuttings are transported to the drilling cuttings screening output unit, and the drilling cuttings mud obtained after the drilling cuttings are screened by the drilling cuttings screening output unit is stored in a mobile manner. Therefore, the utility model can centrally store the waste drilling cuttings of multiple drilling development sites at one time.

[0013] 2) A storage tank system for comprehensive processing of drilling cuttings according to 1), wherein a drilling cuttings receiving unit for centrally receiving drilling cuttings from at least one drilling development site and storing them in a single round comprises multiple drilling development sites and a centralized pool, wherein a transportation channel is provided between the multiple drilling development sites and the centralized pool, wherein the centralized pool is used to store drilling cuttings from multiple drilling development sites at one time, and wherein the centralized pool transports drilling cuttings to a drilling cuttings screening and output unit via a pipeline.

[0014] The single-round storage design of the utility model is used for storing drilling cuttings from multiple drilling development sites at one time. When the amount of drilling cuttings does not exceed the storage capacity of the centralized pool, the centralized pool is used as an intermediate transfer station for drilling cuttings storage. The drilling cuttings in the centralized pool are continuously transported to the drilling cuttings screening output unit. The drilling cuttings in the centralized pool are screened by the drilling cuttings screening output unit to obtain drilling cuttings mud for mobile storage. In this way, the entire system can receive drilling cuttings from multiple drilling development sites at one time.

[0015] 3) The storage tank system for comprehensive processing of drilling cuttings according to 2), wherein:

[0016] The drilling cuttings screening and output unit is configured to receive drilling cuttings from at least one drilling development site for screening and mobile storage. The drilling cuttings screening and output unit includes a vibrating screen device, a solid stacking area and a mud storage area. The concentrating pool is connected to the vibrating screen device through a pipeline, and the drilling cuttings are transported into the vibrating screen device. The vibrating screen device has an upper conveying end and a lower conveying end. The upper conveying end corresponds to the solid stacking area and transports the drilling cuttings solid to the fixed stacking area. The lower conveying end corresponds to the mud storage area and transports the drilling cuttings mud to the mud storage area.

[0017] 4) The storage tank system for comprehensive processing of drilling cuttings according to 3), wherein:

[0018] The mud storage area includes a dosing tank and several spare tanks. The feed ports of the dosing tank and the several spare tanks are connected with the lower conveying end through pipelines. The lower conveying end conveys drilling cuttings mud to the dosing tank and the several spare tanks. The discharge ports of the several spare tanks are connected with the dosing tank through pipelines respectively. The several spare tanks convey drilling cuttings mud into the dosing tank respectively.

[0019] The mud storage area designed by the utility model expands the accommodating space for loading drilling cuttings mud through several spare tanks. When there are too many drilling cuttings transported from multiple drilling development sites, the excess drilling cuttings are separated into drilling cuttings solids and drilling cuttings mud through a vibrating screen device. The separated drilling cuttings mud is transported to several spare tanks and a dosing tank through pipelines in sequence. After the dosing tank has processed the drilling cuttings mud, the several spare tanks will sequentially transport the drilling cuttings mud to the dosing tank through pipelines for processing.

[0020] 5) According to the storage tank system for integrated processing of drilling cuttings described in 3), the drilling cuttings screening output unit is configured to receive drilling cuttings from at least one drilling development site for screening and mobile storage, and comprises the following steps:

[0021] Several spare tanks are arranged in the drilling cuttings screening unit, and adjacent spare tanks are connected by pipelines, so that all the spare tanks transport drilling cuttings mud to each other in sequence.

[0022] The utility model adopts a mobile storage method of several spare tanks, which greatly reduces the phenomenon of drilling cuttings mud sticking and settling, maintains the flow of drilling cuttings mud, reduces the drilling cuttings mud sticking and settling adhering to the spare tanks, and thus reduces the cost of cleaning the spare tanks.

[0023] Compared with the prior art, the technical principle and technical effects of the utility model are as follows:

[0024] When the amount of waste drilling cuttings received by the system of the utility model does not exceed the storage capacity of the centralized pool, several spare tanks are set in the drilling cuttings screening output unit, and the drilling cuttings received by the centralized pool are passed through the vibrating screening device to obtain drilling cuttings solids and drilling cuttings mud. When the dosing tank cannot accommodate more drilling cuttings mud, the excess drilling cuttings mud will be stored in other spare tanks, so that the entire system can receive drilling cuttings from multiple drilling development sites at one time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a framework diagram of a storage tank system for comprehensive processing of drilling cuttings according to Example 1 of the utility model. DETAILED DESCRIPTION

[0026] The following is further described in detail through specific implementation methods:

[0027] Reference will now be made in detail to the embodiments disclosed in the present invention, examples of which are described herein and illustrated in the accompanying drawings. Although the present invention will be described in conjunction with the embodiments and / or examples, they do not limit the present invention to these embodiments and / or examples. On the contrary, the present invention discloses alternatives, modifications and equivalents.

[0028] This embodiment sees Figure 1 As shown, the storage tank system for comprehensive processing of drilling cuttings in this embodiment includes a drilling cuttings receiving unit and a drilling cuttings screening and output unit, wherein the drilling cuttings receiving unit is configured to centrally receive drilling cuttings from at least one drilling development site and perform a single round; the drilling cuttings screening and output unit is configured to screen and flow-store the drilling cuttings received from at least one drilling development site; the discharge port of the drilling cuttings receiving unit is connected to the feed port of the drilling cuttings screening and output unit.

[0029] When the utility model is in use, when the discharge port of the drilling cuttings receiving unit is docked with the feed port of the drilling cuttings screening output unit, the drilling cuttings received by the drilling cuttings receiving unit are stored in a single round, and the drilling cuttings are transported to the drilling cuttings screening output unit, and the drilling cuttings mud obtained after the drilling cuttings are screened by the drilling cuttings screening output unit is stored in a mobile manner. Therefore, the utility model can centrally store the waste drilling cuttings of multiple drilling development sites at one time.

[0030] The drilling cuttings receiving unit for centrally receiving drilling cuttings from at least one drilling development site and storing them in a single round includes multiple drilling development sites and a centralized pool. A transportation channel is provided between the multiple drilling development sites and the centralized pool. The centralized pool is used to store drilling cuttings from multiple drilling development sites at one time. The centralized pool transports the drilling cuttings to the drilling cuttings screening and output unit through a pipeline.

[0031] The single-round storage design of the utility model is used for storing drilling cuttings from multiple drilling development sites at one time. When the amount of drilling cuttings does not exceed the storage capacity of the centralized pool, the centralized pool is used as an intermediate transfer station for drilling cuttings storage. The drilling cuttings in the centralized pool are continuously transported to the drilling cuttings screening output unit. The drilling cuttings in the centralized pool are screened by the drilling cuttings screening output unit to obtain drilling cuttings mud for mobile storage. In this way, the entire system can receive drilling cuttings from multiple drilling development sites at one time.

[0032] Among them, the drilling cuttings screening and output unit is configured to receive drilling cuttings from at least one drilling development site for screening and mobile storage. The drilling cuttings screening and output unit includes a vibrating screen device, a solid stacking area and a mud storage area. The concentration pool is connected to the vibrating screen device through a pipeline, and the drilling cuttings are transported to the vibrating screen device. The vibrating screen device has an upper conveying end and a lower conveying end. The upper conveying end corresponds to the solid stacking area, and transports the drilling cuttings solid to the fixed stacking area. The lower conveying end corresponds to the mud storage area, and transports the drilling cuttings mud to the mud storage area.

[0033] The mud storage area includes a dosing tank and several spare tanks. The feed ports of the dosing tank and the spare tanks are connected with the lower conveying end through pipelines. The lower conveying end conveys drilling cuttings mud to the dosing tank and the spare tanks. The discharge ports of the spare tanks are connected with the dosing tank through pipelines, and the spare tanks convey drilling cuttings mud into the dosing tank.

[0034] The mud storage area designed by the utility model expands the accommodating space for loading drilling cuttings mud through several spare tanks. When there are too many drilling cuttings transported from multiple drilling development sites, the excess drilling cuttings are separated into drilling cuttings solids and drilling cuttings mud through a vibrating screen device. The separated drilling cuttings mud is transported to several spare tanks and a dosing tank through pipelines in sequence. After the dosing tank has processed the drilling cuttings mud, the several spare tanks will sequentially transport the drilling cuttings mud to the dosing tank through pipelines for processing.

[0035] Several spare tanks are arranged in the drilling cuttings screening unit, and the adjacent spare tanks are connected by pipelines, and all the spare tanks sequentially transport drilling cuttings mud to each other. The utility model adopts a mobile storage method of several spare tanks, which greatly reduces the phenomenon of sticking and settling of drilling cuttings mud, maintains the flow of drilling cuttings mud, reduces the sticking and settling of drilling cuttings mud in the spare tank, and thus reduces the cost of cleaning the spare tank.

[0036] When the amount of waste drilling cuttings received by the system of the utility model does not exceed the storage capacity of the centralized pool, several spare tanks are set in the drilling cuttings screening output unit, and the drilling cuttings received by the centralized pool are passed through the vibrating screening device to obtain drilling cuttings solids and drilling cuttings mud. When the dosing tank cannot accommodate more drilling cuttings mud, the excess drilling cuttings mud will be stored in other spare tanks, so that the entire system can receive drilling cuttings from multiple drilling development sites at one time.

[0037] The above are only embodiments of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A storage tank system for comprehensive processing of drilling cuttings, characterized in that: include: a drilling cuttings receiving unit configured to centrally receive drilling cuttings from at least one drilling development site in a single round; A drilling cuttings screening and output unit is configured to receive drilling cuttings from at least one drilling development site for screening and mobile storage; Wherein, the discharge port of the drilling cuttings receiving unit is connected with the feed port of the drilling cuttings screening and output unit; The drilling cuttings receiving unit for centrally receiving drilling cuttings from at least one drilling development site and storing them in a single round comprises multiple drilling development sites and a central pool, wherein a transportation channel is provided between the multiple drilling development sites and the central pool, and the central pool is used to store drilling cuttings from multiple drilling development sites at one time, and the central pool transports the drilling cuttings to the drilling cuttings screening and output unit through a pipeline; The drilling cuttings screening and output unit is configured to receive drilling cuttings from at least one drilling development site for screening and mobile storage. The drilling cuttings screening and output unit includes a vibrating screen device, a solid stacking area and a mud storage area. The concentrating pool is connected to the vibrating screen device through a pipeline, and the drilling cuttings are transported into the vibrating screen device. The vibrating screen device has an upper conveying end and a lower conveying end. The upper conveying end corresponds to the solid stacking area and transports the drilling cuttings solid to the fixed stacking area. The lower conveying end corresponds to the mud storage area and transports the drilling cuttings mud to the mud storage area.

2. The storage tank system for comprehensive processing of drilling cuttings according to claim 1 is characterized in that: The mud storage area includes a dosing tank and several spare tanks. The feed ports of the dosing tank and the several spare tanks are connected with the lower conveying end through pipelines. The lower conveying end conveys drilling cuttings mud to the dosing tank and the several spare tanks. The discharge ports of the several spare tanks are connected with the dosing tank through pipelines respectively. The several spare tanks convey drilling cuttings mud into the dosing tank respectively.

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