New barium and strontium descaling technology in Shengli Oilfield solves production problems

Sinopec News Network reported on August 6, an oil well that was going to be overhauled at the Shengli Oilfield Dongxin Oil Production Plant.
Under the new technology of Shengli Petroleum Engineering Technology Research Institute, it was easy to solve the problem without moving the pipe string, and the daily output of 5 tons was restored.
Normal production
.

With the development of oil and gas wells in oil fields, the formation of barium sulfate and strontium sulfate scales has become more and more serious
.
Barium and strontium scale is a type of scale that is difficult to deal with in oil and gas field production.

Well DXY2P4 lay down because of barium and strontium scale
.
During the operation, it was found that the scale was serious, the pass through the well was blocked, and the casing milling had no footage

However, the scientific research personnel of the Oil Insurance Institute of the Shengli Engineering Institute had the confidence to say no to this kind of plan
.
In recent years, in response to the barium-strontium scale problem that is difficult to solve by conventional descaling methods, scientific researchers have taken precautions and carried out a series of research and research, and have reserved new barium-strontium descaling technologies in advance

In view of the field problem of DXY2P4 well, it was judged that the scale type was barium sulfate.
The researchers carried out indoor experiments and optimized the formula of weak alkaline descaling agent to ensure the dissolution rate of barium sulfate without causing damage to downhole string tools
.
The entire construction process is simple, and the immovable pipe string construction perfectly solves the barium sulfate scale jam, greatly shortens the construction period and saves costs

This technology has the advantages of simple construction, high fouling rate, and non-corrosive to downhole pipe string tools.