Low-fluorescence sticking reliever and preparation method thereof

Abstract

The invention relates to the technical field of a sticking reliever for petroleum and natural gas drilling and a preparation method thereof, in particular to a low-fluorescence sticking reliever and a preparation method thereof. The low-fluorescence sticking reliever comprises mineral oil, a thickening agent, an emulsifying agent and a rapid penetrating agent, wherein the mineral oil is one of white oil and aviation kerosene; the thickening agent is one or two of organic bentonite and low-fluorescence asphalt; the emulsifying agent is at least one of OP-10, OP-30, Twain-80, SP-80, oleic acid,P-30 and P-20; and the rapid penetrating agent is sodium diethylhexyl sulfosuccinate or alkylphenol polyethoxylate ether. The sticking reliever has the advantages of rapidly and effectively solving the accidents of drill sticking, avoiding the occurrences of other underground complicated conditions (well wall collapse, well leakage, and the like) caused by the drill sticking, and achieving the purposes of shortening the drilling period and saving the drilling expense.

Description

technical field [0001] The invention relates to the technical field of a jam-releasing agent for oil and gas drilling and a preparation method thereof, and relates to a low-fluorescence jam-releasing agent and a preparation method thereof. Background technique [0002] In the method of dealing with differential pressure sticking, commonly used mechanical methods include vibration, sleeve milling, continuous hydraulic jam release, etc. Commonly used chemical treatment methods include soaking oil, soaking acid, and water-based or oil-based jam release agents. In the two types of jamming methods, the disadvantage of using the mechanical method is that it takes a long time and the operation cost is high. Therefore, when dealing with the problem of differential pressure sticking, in most cases, chemical treatment methods are still used. The chemical treatment methods are as follows. ①Soaking acid to remove card; ②Soaking oil to remove card; ③Polymer glue to remove card; ④ Foami...

AI Technical Summary

Problems solved by technology

[0004] Currently commonly used jam release agents mainly have the following problems in practical application: (1) most oil-based jam release agents have high fluorescence levels, which affect geological logging; (2) with the addition of solid phase additives, in a certain To a certain extent, the performance of the water-based anti-blocking agent is poor (when the density of the water-based anti-blocking agent is higher than 1.54g / cm 3 When the card-free liquid analyzer measures that it takes more than 50% longer than the same density oil-based card-free agent), the card-free efficiency is low, and its application temperature range is narrow (less than 160°C), and it takes a long time; (3) In the process of unblocking construction, the unblocking fluid and drilling fluid are mutually polluted (drilling fluid is seriously intruded by salt, oil, and calcium from the unblocking fluid, and cannot be used any longer), which increases the processing steps and drilling costs