Development and Deployment of a Scale Squeeze Enhancer and Oil-Soluble ScaleInhibitor To Avoid Deferred Oil Production Losses During Squeezing Low-WaterCut Wells, North Slope, Alaska

Abstract

Development and Deployment of a Scale Squeeze Enhancer and Oil-Soluble Scale Inhibitor To Avoid Deferred Oil Production Losses During Squeezing Low-Water Cut Wells, North Slope, Alaska M.M. Jordan; M.M. Jordan NEEC Search for other works by this author on: This Site Google Scholar C.J. Graff; C.J. Graff NEEC Search for other works by this author on: This Site Google Scholar K.N. Cooper K.N. Cooper BP Amoco Search for other works by this author on: This Site Google Scholar Paper presented at the SPE International Symposium on Formation Damage Control, Lafayette, Louisiana, February 2000. Paper Number: SPE-58725-MS https://doi.org/10.2118/58725-MS Published: February 23 2000 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Jordan, M.M., Graff, C.J., and K.N. Cooper. "Development and Deployment of a Scale Squeeze Enhancer and Oil-Soluble Scale Inhibitor To Avoid Deferred Oil Production Losses During Squeezing Low-Water Cut Wells, North Slope, Alaska." Paper presented at the SPE International Symposium on Formation Damage Control, Lafayette, Louisiana, February 2000. doi: https://doi.org/10.2118/58725-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE International Conference and Exhibition on Formation Damage Control Search Advanced Search AbstractThe paper outlines the experimental work that has been carried out to develop an effective treatment strategy for production wells, specifically those with electrical submersible pumps (ESP's) that suffered significant performance impairment at water cuts of less than 5% due to carbonate scale deposited within the ESP's. These Alaskan production wells had been treated fora couple of years using aqueous based scale inhibitor squeezes. Many of these treatments resulted in a significant 10% to 20% reduction in the oil production rate following the squeeze. The damage mechanism was investigated by core flooding and revealed to be a combination of water block and relativepermeability effects. Following the damage investigation core flood, a secondstudy was undertaken to investigate a chemical treatment to remove the damageal ready present within the near well bore and prevent further deposition of scale. The result of this test program was the development of a treatment strategy which used a solvent package followed by an oil soluble scale inhibitor. Field results of this type of treatment suggest that the well streated with this chemical system did not suffer any reduction in oil production rate and were effectively protected from carbonate scale. Wells that had been damaged by the previous aqueous treatments could be stimulated and the lost oil production recovered. Reference is also made to the development of an improved aqueous based squeeze treatments for the treatment of higher water cut wells.IntroductionThe formation of inorganic mineral scale within onshore and offshoreproduction facilities around the world is a relatively common problem. Scale can form from a single produced connate or aquifer water due to changes in temperature and pressure, or when two incompatible waters mix. An example of the latter would be seawater support of a reservoir where the formation wateris rich in cations (Ba, Sr, Ca) and the injection water is rich in anions(SO4). The production of such co-mingled fluids results in the formation of inorganic scale deposits. The type of scale and their solubility is a function of the water chemistry and physical production environment. This paper will outline the scale types observed at the Milne Point field, North Slope, Alaska, the associated production problems, and the strategies used past and present, to control the deposition of scale. Keywords: wax remediation, hydrate inhibition, upstream oil & gas, remediation of hydrates, scale inhibitor, squeeze treatment, spe 58725, deployment, asphaltene inhibition, formation water Subjects: Production Chemistry, Metallurgy and Biology, Improved and Enhanced Recovery, Inhibition and remediation of hydrates, scale, paraffin / wax and asphaltene This content is only available via PDF. 2000. Society of Petroleum Engineers You can access this article if you purchase or spend a download.