Dongsheng Gas Field is busy with upgrading and upgrading of gathering and transportation of "Driving Diseases, Reinforcing Elements and Preventing Diseases"

Sinopec News.
com.
In the late summer and early autumn, the summer heat is still strong.
Few people can think of the cold in the Ordos work area in winter in this season.
But in the eyes of the gathering and transportation process technicians of the Second Gas Production Plant of North China Oil and Gas Branch, this It is a good time to "remove diseases in winter and cure diseases in summer", to "remove diseases, consolidate the roots, and cure diseases" to overhaul and rectify the problems exposed by the Dongsheng Gas Field Gathering and Transportation System during the winter production period last year, and to repair and correct the production facilities with hidden risks.
, The gathering and transportation pipeline network is upgraded to effectively guarantee the safe and stable operation of the gas field gathering and transportation system in the winter production this year
.

"Repelling disease": Overcoming the problem of emulsification, there are "great tricks" for demulsification and oil recovery

"If the water treatment is not good enough, the output of the whole plant will be affected
.

Since the production overwintering last year, with the increase in the amount of bubble discharge agent added in gas wells and the incomplete flowback of fracturing fluids, the composition of gas field produced water has become increasingly complex, and a large amount of emulsions have flooded the storage tanks, which has seriously affected the normal flow of produced water treatment in natural gas treatment plants.
Operation, the production of condensate is greatly reduced
.

Technological innovation promotes both symptoms and root causes, and technicians have actively carried out technical research on the temporary emulsion processing device, which was officially completed and put into use in May this year
.

"Guyuan": Tackling key defoaming technology, a "trick" to prevent downtime

　　The internal rectification structure and the end wire mesh of the internal and external transmission and separation skids of the gas gathering stations in the Dongsheng Gas Field do not have the ability to defoam and remove sand.
A large amount of foam, water and sand are not separated in time and directly poured into the compressor system, causing frequent high liquids in the compressor.
Position alarm and shutdown, the inlet cone filter is blocked or damaged, and the intake valve and valve seat are damaged to varying degrees
.

　　In order to effectively prevent the impact of frequent compressor shutdowns and maintenance on the output, the technicians carried out technical research on the demand of "defoaming + water separation + sand removal" in the gas gathering station, and designed and installed defoaming coalescing separation for the first time in station 6.
Through the process of "first collision + secondary collision (umbrella cover) + defoaming, coalescence + terminal interception", the foam in the foam-containing natural gas is crushed and the gas-liquid-solid three-phase separation is accelerated, which effectively solves the problem.
The problems of low process separation efficiency and poor defoaming effect greatly improve the separation effect of natural gas and reduce the frequency of compressor failures.
At the same time, the service life of compressor wearing parts is greatly increased, which is of positive significance for reducing operating costs and improving mining economic benefits
.

　　"Treatment before disease": Pipe network transformation and upgrading, there is a "coup" to reduce back pressure

　　In Dongsheng Gas Field, there are too many wells connected in series with ground gas pipelines, too long series connection distance, over-limit gas transmission capacity of pipelines, and high wellhead back pressure
.

　　The technicians used PIPESIM numerical simulation calculations to formulate the pipeline network backpressure reduction plan and implement them in batches.
They completed the connection transformation of the inbound branch line of No.
16 station, and the opening operations of multiple wells such as JPH-485 and JPH-489 under pressure.
Reduced the back pressure of 27 gas wells by 0.
3-0.
65 MPa, and increased the released production by 14,000 cubic meters per day
.

　　Faced with the high-temperature "roasting" test of "Autumn Tiger", the technicians of the second gas production plant are still busy
.