GHEORGHE BRANOIU,TUDORA CRISTESCU, MARIA STOICESCU, MONICA-EMANUELA STOICA, SILVIAN SUDITU<br>Mineralogical Investigations by X-rays Diffraction to Identify <br>the Causes of Blocking Filters in the Injection Process <br>of Connate Water for an Oil Field in Romania

GHEORGHE BRANOIU,TUDORA CRISTESCU, MARIA STOICESCU, MONICA-EMANUELA STOICA, SILVIAN SUDITU
Mineralogical Investigations by X-rays Diffraction to Identify
the Causes of Blocking Filters in the Injection Process
of Connate Water for an Oil Field in Romania

Abstract:

The paper presents the results of experimental research conducted in order to establish the causes that led to the blocking filters in the circuit of conditioning connate water, for injection into an oil reservoir. Water injection is one of the most widespread conventional methods in the exploitation of the hydrocarbon reservoirs and aims to increase the recovery factor. Water injected into the reservoir must have certain physical-chemical characteristics and to fulfill some quality requirements. We investigated a filter clogged with solids and hydrocarbons coming from a water injection plant which belong to the oil field X, located in Getic Depression (south-western Romania). The filter that is the subject of our research is a filter type glass wool with filtration degree of 20 microns. Were carried out X-ray diffraction analysis, which allowed establishing of mineralogical composition of the solid material causing the blocking filter. As a result has been proposed ways to combat the phenomenon of clogging of the filters and as consequence of blocking of them, and methods of cleaning of the filters. Keywords: oil reservoir, water injection, blocking of filters, X-rays diffraction

Issue: 2015, Volume 66, Issue 11

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