Oil-base drilling cuttings thermal analytical treatment method

A technology of oil-based drilling cuttings and treatment methods, which is applied in the field of offshore or onshore oil-based drilling cuttings treatment and thermal analysis of waste oil-based drilling cuttings. It can solve the problems of pollution, reduce the oil content of drilling cuttings, and achieve oil content The effect of low cost, convenient transportation and good market prospects

Active Publication Date: 2014-12-03
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems and deficiencies in the current common oil-based drilling cuttings processing technology, and provide a thermal analysis treatment method for oil-based drilling cuttings. Through this technical method, the oil content of drilling cuttings can be reduced, the base oil can be recovered to the maximum extent, and the solution can be solved. Environmental pollution problems and at the same time to achieve the purpose of resource recycling

Method used

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  • Oil-base drilling cuttings thermal analytical treatment method
  • Oil-base drilling cuttings thermal analytical treatment method
  • Oil-base drilling cuttings thermal analytical treatment method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0033] see figure 1 Shown, the present invention comprises the following steps:

[0034] (1) Filter the oil-based drilling cuttings to remove impurities and large particle cuttings; for large particle cuttings, crush them and filter again;

[0035] (2) Transport the filtered oil-based cuttings to the pretreatment device, carry out stirring and preheating treatment on the cuttings, improve the fluidity of the oil-based cuttings to facilitate the pumping of the feed pump (gear pump and plunger pump) Enter the thermal analysis processing host for thermal analysis processing;

[0036] (3) Keep the feeding process and the entire pipeline in a sealed state. Before the oil-based drilling cuttings enter the thermal analysis processing main engine, the main engine and gas phase pipeline must be replaced with inert gas to ensure the safety of the treatment process;

[0037] (4) Use the feed pump to transport the oil-based drilling cuttings in the pretreatment device to the thermal ana...

Embodiment 2

[0045] On the basis of Example 1, the specific implementation of this example is: the specific method of filtering oil-based cuttings in step (1) is: using a storage box to stir the oil-based cuttings to be processed by forward and reverse spirals After that, it is sent to the vibrating screen to remove solid phase particles and sundries above Φ10mm, and the oil-based cuttings passing through the vibrating screen enter the pretreatment device; these oily cuttings particles above Φ10mm are crushed together and then pass through the vibrating screen again and enter the pretreatment device again. The processing device is to enter the next step of processing flow.

[0046] In step (2), the filtered oil-based drilling cuttings are pumped to the pretreatment device (the pretreatment device is a prior art equipment, which is a storage tank with an interlayer, the storage tank has a stirring impeller, and has A device with a stirring function, circulating water in the interlay...

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Abstract

The invention belongs to the technical field of environment protection of oil and gas fields and particularly provides an oil-base drilling cuttings thermal analytical treatment method. The method comprises the following main steps: conveying the oil-base drilling cuttings after pre-treatment to a processing unit; heating to raise the reaction temperature to the volatilization temperature of hydrocarbon in the components in the drilling cuttings; then, maintaining for a certain standing time till oil gas is completely volatilized; after treatment, storing the drilling cuttings by virtue of a discharge device for discharging; feeding the oil gas into a recovering and separating unit by virtue of an exhaust device; recovering components with different condensation points in different condensation recovery units; and maintaining the recovered oil unchanged for further preparing an oil-base drilling fluid. The method solves the defects and shortcomings of other methods well. By adopting the oil-base drilling cuttings thermal analytical treatment technology, the oil content of the drilling cuttings is low (less than 1%), so that the discharge requirement is satisfied. The method provided by the invention further achieves the purposes of treating the oil-base drilling cuttings and recycling resources while the problem of environmental pollution is solved.

Description

technical field [0001] The invention relates to the field of environmental protection of oil and gas fields, in particular to a method for performing thermal analysis on waste oil-based cuttings produced during drilling. The invention is mainly used for offshore or land oil-based drilling cuttings treatment. Background technique [0002] Waste oil-based cuttings produced during drilling contain a large amount of base oil and other harmful substances. If they are not handled properly or not up to standard, they will cause great harm to the environment. At present, the domestic treatment methods for oil-based drilling cuttings mainly use methods such as incineration, deep burial after deoiling, and reinjection into the formation. But all three methods have left potential pollution hidden dangers, and also wasted a large amount of base oil resources simultaneously. [0003] At present, the treatment of oily drilling cuttings in the world generally adopts centralized treatment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/02
Inventor 张新发李养池李前春徐军李世勇薛斌郭亮陈怀兵
Owner BC P INC CHINA NAT PETROLEUM CORP
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