A temperature-resistant and pressure-resistant visual compatibility test instrument

Abstract

The present invention discloses a temperature-resistant pressure-resistant visual compatibility experiment apparatus and a method, and the apparatus comprises a hollow container with an upper opening and a lower opening, a heating means around the external of the container, one pair of visible window cover plates respectively arranged at the upper opening and the lower opening of the container, and a pressurizing device in communication with an inner cavity of the container. The temperature-resistant pressure-resistant visual compatibility experiment apparatus is used for evaluation of compatibility of formation water and a working fluid in oil field development and production process under high temperature and pressure, compatibility of various oil additives under high temperature and pressure at reservoir conditions and performance of various scale inhibitors under high temperature and pressure. In particular, the temperature-resistant pressure-resistant visual compatibility experiment apparatus mainly aims at experiments, at reservoir high temperature and pressure conditions, of which experiment results cannot be accurately determined by conventional methods, and by use of the temperature-resistant pressure-resistant visual compatibility experiment apparatus and the method, accurate qualitative judgment can be obtained.

Description

technical field [0001] The invention relates to an experimental device for the petroleum industry, in particular to a temperature-resistant and pressure-resistant visual compatibility experimental instrument. Background technique [0002] The fouling damage caused by the well-introduction fluid to the reservoir is a common type of damage to the reservoir during the oilfield development process. In the process of drilling, completion, workover, water injection, etc. Reservoir fluid incompatibility) Scaling under reservoir conditions causes the seepage capacity of the reservoir to decrease, and the reservoir is damaged. Scaling damage will reduce the production of oil wells, reduce the water injection rate of water wells, affect the recovery rate of oil fields, and cause serious economic losses. For this reason, indoor evaluation and field application are adopted for the compatibility of well fluid and formation and the screening and evaluation of scale inhibitors in each dev...

AI Technical Summary

Problems solved by technology

[0003] At present, there are certain disadvantages in the compatible experimental methods at home and abroad. The current experimental methods are difficult to truly and effectively judge the fluid state under the reservoir temperature and pressure.

In the process of oilfield development and production, the contact temperature and pressure of well fluid and formation water are in a state of high temperature and high pressure, especially for the development of deep low-permeability reservoirs, which are often under high temperature of over 100 ℃ and high pressure of tens of MPa. Conventional laboratory The method cannot simulate the reservoir conditions, and the scaling and compatibility under high temperature and high pressure can only be simulated by digital simulation software, etc.

Images