On-site acidizing fluid analysis shows HCL and HF contents often varied substantially from specified amounts
A quality control survey of 162 acidizing fluids revealed the following problems: (1) acid concentrations were often too high or too low, (2) frequently, fluids were not thoroughly mixed; and (3) in some cases, fluids contained incompatible additives. A field test kit and conventional laboratory analyses were used to determine the acid concentrations in fluids from 44 acid jobs done is S. California during the last 4 yr. On 41% of the jobs, the acid concentration of at least one fluid varied more than 30% from the specified value. Analyses of iron content in the acids showed that 78% of the fluids contained less than 200 ppM iron. The average iron content was 180 ppM. The test kit assembled for this survey permits rapid well-site analysis by people who do not have formal training in chemistry. 17 references.
- OSTI ID:
- 6417171
- Report Number(s):
- CONF-820316-
- Journal Information:
- SPE Repr. Ser.; (United States), Conference: California regional SPE meeting, San Francisco, CA, USA, 24 Mar 1982
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FLUIDS
CHEMICAL ANALYSIS
OIL WELLS
ACIDIZATION
FIELD TESTS
HYDROCHLORIC ACID
HYDROFLUORIC ACID
IRON
QUANTITY RATIO
SURVEYS
TESTING
WELL SERVICING
WELL STIMULATION
ELEMENTS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METALS
STIMULATION
TRANSITION ELEMENTS
WELLS
020300* - Petroleum- Drilling & Production