Predicting of pressure and temperature in HTHP production wells

2015 ◽  
pp. 199-310
Keyword(s):  
Production Wells

Production wells killing on R. Trebs high-temperature cavernous-fractured carbonate deposits

2017 ◽  
pp. 41-45
Author(s):  
S.A. Vakhrushev ◽  
◽  
A.G. Mikhailov ◽  
D.S. Kostin ◽  
A.R. Dindaryanov ◽  
...  
Keyword(s):  
High Temperature ◽  
Fractured Carbonate ◽  
Production Wells ◽  
Carbonate Deposits

GEOLOGICAL-TECHNOLOGICAL SUBSTANTIATION FOR CONDUCTING HYDRAULIC FRACTURING OF A FORMATION IN PRODUCTION WELLS

2020 ◽  
pp. 17-22
Author(s):  
A.M. Zinoviev ◽  
◽  
P.A. Ptichkin ◽  
S.O. Kotlyarov ◽  
A.S. Gavryushin ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Production Wells

Study and Application of In-depth Water Control Technology for Production Wells

2011 ◽  
Vol 29 (24) ◽  
pp. 2568-2577
Author(s):  
D. Caili ◽  
Y. Qing ◽  
G. Qilin ◽  
Z. Fulin
Keyword(s):  
Control Technology ◽  
Water Control ◽  
Production Wells ◽  
Depth Water

Downhole Heating Technology – New Solution for Paraffinic Wells

2021 ◽  
Author(s):  
Mihaela Vlaicu ◽  
Vasile Marius Nae ◽  
Patrick Christian Buerssner ◽  
Stefan Liviu Firu ◽  
Natalya Logashova
Keyword(s):  
Technology Implementation ◽  
Online Monitoring ◽  
New Technology ◽  
Internal Diameter ◽  
Technology Application ◽  
Production Wells ◽  
The Difference ◽  
Wax Crystallization ◽  
Heating Technology ◽  
Production Losses

Abstract Paraffin represents one of the main case of failures and production losses which facing the entire oil industry. Prevention of paraffin deposition on the subsurface/surface equipment can be achieved by keeping the paraffin dissolved in crude oil or minimizing the adhesion or aggregation process of wax crystals. The paraffin problems which occur, conduct to gradual reduction of the tubular and pipelines internal diameter, restriction or valves blockages, and reduce the equipment capacity until the production is stop. Problems due to paraffin deposition varies and is different according with each commercial field, sometime the difference is from a well to well which producing from the same reservoir with different consistency. How we shall proceed? Before or after paraffin is field on the equipment? How could be avoid the future paraffin deposition? How long the selected method is proper for well ? The decision represents a combination based on oil's chemical & physical characteristics, well's behavior, method selected for prevention or elimination and combined with economic analysis and field experience. The paraffin inhibition applying is a common practice in OMV Petrom, which cover majority of the production wells. For the special wells, which the paraffin inhibition didn't provided satisfying results (multiple intervention due to paraffin deposition) was selected the Down Hole Heating technology (DHH) which was successfully tested in our company since 2014 thanks according with the yearly New Technology Program. The operating principle consists in heating the fluid volume from tubing using the heating cable which can be installed inside tubing, for NF and ESP wells or outside tubing for SRP or PCP wells. The cable is designed and located at the interval of wax crystallization appearance and heats the fluid to the temperature higher than the wax crystallization point (WAT). Since then, the DHH technology had an upward course, proven by high run life (highest value 2500 days / average 813 days) of the technology at the total 47 wells equipped, until this moment. Based on the successful results, recorded of 64% of old production wells equipped, it was decided to apply the technology at first completion of the new wells (36%), thus ensuring the protection of the new equipment. The paper offers an overview of DHH technology implementation, achievements, benefits and online monitoring of technology implementation starting with 2014 until today. The total impact shown a decreasing of no.of failures with 73,8%, the cost of intervention with 76,5%. The production losses decreased only with 5%, which certifies the fact that the technology helping production maintaining during the exploitation in comparison with production losses due paraffin issues recorded at wells without equipped with DHH technology. During 6 years of down hole heating technology application were developed candidate selection decision tree, monitoring the electrical efficiency, using the adaptability capacity of the technology from one well to another and integrate the temperature parameters in online monitoring system as part of digitalization concept of OMV Petrom, aspects which will be present in this article.

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