Correction Method of RPM C/O in Offshore Heavy Oil Reservoir

2013 ◽  
Vol 318 ◽  
pp. 390-394 ◽  
Author(s):  
Zhong Hao Wang ◽  
Jin Bo Wu ◽  
Jing Gong Li
Keyword(s):  
Heavy Oil ◽  
Clay Content ◽  
Calcium Content ◽  
Data Interpretation ◽  
Correction Method ◽  
Oil Reservoir ◽  
Oil Saturation ◽  
Remaining Oil ◽  
Heavy Oil Reservoir ◽  
Gravel Pack

At present, the most advanced remaining oil saturation logging technologies are RPM RST RMT PNN PND in domestic and outside. But these have only been made some correction of porosity, lithology, borehole conditions, formation water salinity, oil density. So they are not suitable for application in the offshore heavy oil reservoirs of gravel pack. The writer has designed a volumetric model of considering gravel pack, casing size, wellhole liquid and so on. And some correction formulas are deduced with single factor and multiple factors by combining this volume model. While the author use these formulas to establish some theoretical charts. In the case of that the porosity is 0.3, the author analyzes the C/O value change rule with the same oil saturation in sandstone strata. When the gravel packing volume of 0.1, the C/O value decreases about 0.15. When casing diameter increases from 6inches to 7inches, the C/O value increases about 0.2. When the casing diameter is 6inches, make the clay content, gravel content, and calcium content for 0.1, the C/O value increases about 0.6. After making the gravel pack and other influencing factors correction, contrast RPM data interpretation results and PLT data interpretation results. It is found that the results of remaining oil explain accuracy is improved 10% or more. These methods provide a new theoretical basis for the offshore heavy oil reservoir in the fine interpretation of RPM data.

scholarly journals The Research and Applications of Remaining Oil Potential Tapping in High Watered Stage for Heavy Oil Reservoir in Bohai

2018 ◽  
Vol 06 (09) ◽  
pp. 10-21
Author(s):  
Junting Zhang ◽  
Zongbin Liu ◽  
Lilei Wang ◽  
Zhou Fang ◽  
Jingfu Deng
Keyword(s):  
Heavy Oil ◽  
Oil Reservoir ◽  
Remaining Oil ◽  
Heavy Oil Reservoir

Accurate Oil Saturation Determination and Monitoring in a Heavy Oil Reservoir

1998 ◽  
Author(s):  
Paul Harness ◽  
Noel Shotts ◽  
Jim Hemingway ◽  
David Rose ◽  
Roy van der Sluis
Keyword(s):  
Heavy Oil ◽  
Oil Reservoir ◽  
Oil Saturation ◽  
Heavy Oil Reservoir

Autonomous Inflow-Control Devices Boost Production While Managing Sand

2021 ◽  
Vol 73 (10) ◽  
pp. 71-72
Author(s):  
Chris Carpenter
Keyword(s):  
Heavy Oil ◽  
Oil Field ◽  
Oil Reservoir ◽  
Oil Viscosity ◽  
Alpha Wave ◽  
Offshore Technology ◽  
Control Devices ◽  
Heavy Oil Reservoir ◽  
Gravel Packing ◽  
Gravel Pack

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper OTC 30403, “Sand Production Management While Increasing Oil Production of a Gravel-Packed Well Equipped With Rate-Controlled-Production Autonomous Inflow-Control Devices in a Thin Heavy-Oil Reservoir Offshore China,” by Shuquan Xiong, Fan Li, and Congda Wei, CNOOC, et al., prepared for the 2020 Offshore Technology Conference Asia, originally scheduled to be held in Kuala Lumpur, 2–6 November. The paper has not been peer reviewed. Copyright 2020 Offshore Technology Conference. Reproduced by permission. A 2018 infill development campaign for a horizontal well offshore China targeted improved production through the installation of autonomous inflow-control devices (AICDs). However, because the well requires gravel packing to manage the sand, the integration of AICDs and the gravel pack was an issue. An integrated work flow was followed to deliver the AICD application successfully in an offshore heavy-oil reservoir with major uncertainties in remaining oil thickness and water/oil contacts. AICD completions ensured balanced contribution from all reservoir sections and limited water production significantly while the gravel pack kept the valves safe from the effects of sand. Field Description The field is a low-amplitude fault anticline oil field developed on the basement uplift. The structure is relatively gentle (Fig. 1). The reservoir lithology is mainly feldspathic quartz sandstone, with an average porosity of 22%, an average permeability of 397 md, a reservoir pressure coefficient of 1, an oil density of 0.92 g/cm3, and crude oil viscosity of 150 cp. The current methodology for gravel packing with ICDs/AICDs in the well uses a multiple alpha-wave technique whereby at least one conventional standalone screen joint is deployed at the toe of the well to provide a return path during the buildup of the alpha wave. The flow rate is reduced progressively to maximize the dune weight until screenout is observed. Once the gravel-packing operation is complete, the standalone-screen section at the toe is isolated before the well is placed on production. This technique does not allow a complete pack to be achieved and will allow more gravel to build up around the zonal isolation packers. This methodology is most applicable in unconsolidated sands with high net-to-gross reservoirs where borehole collapse will occur early in well life. One technique to provide sufficient flow path through the screen assembly is to integrate sliding sleeves into each screen joint. However, in long lateral wellbores, this may be prohibitively expensive and requires multiple manual manipulations as the wash pipe is retrieved. The use of a temporary bypass valve is recommended to enable standard gravel-packing operations to be performed with ICDs without significant additional cost, complexity, or compromise. The dissolvable material is used with a valve located within the ICD/AICD housing to provide a high-flow-area path from the annulus to the tubing during completion operations.

MONITORING CO2 SATURATION USING THREE-DETECTOR PNC LOGGING TECHNIQUE FOR CO2 EOR IN HEAVY OIL RESERVOIR

2019 ◽  
Author(s):  
Feng Zhang ◽  
Quanying Zhang ◽  
Lili Tian ◽  
Xiaoyang Zhang ◽  
Qian Chen ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Oil Reservoir ◽  
Heavy Oil Reservoir ◽  
Co2 Eor

SAGD Process Monitoring in Heavy Oil Reservoir Using UWB Radar Techniques

2016 ◽  
Vol 64 (6) ◽  
pp. 1884-1895 ◽  
Author(s):  
Daniel Oloumi ◽  
Kevin Khee-Meng Chan ◽  
Pierre Boulanger ◽  
Karumudi Rambabu
Keyword(s):  
Process Monitoring ◽  
Heavy Oil ◽  
Oil Reservoir ◽  
Uwb Radar ◽  
Heavy Oil Reservoir

Review of Research on Interlayer SAGD in Domestic and Foreign

2014 ◽  
Vol 644-650 ◽  
pp. 5142-5145 ◽  
Author(s):  
Peng Luo
Keyword(s):  
Heavy Oil ◽  
Development Process ◽  
Basic Research ◽  
Technical Support ◽  
Oil Field ◽  
Oil Reservoir ◽  
Steam Chamber ◽  
Heavy Oil Reservoir

China is rich in resources of heavy oil.But some oilfield heavy oil reservoir in the development process will encounter interlining, affecting the development effect. In the process of SAGD to carry out the basic research of reservoir interlayer is helpful to identify the basic attributes of reservoir in the interlayer. The interlayer of SAGD development process is helpful to find the study focus and direction of development. Steam chamber breakthrough research achievements of interlining research abroad, summarizes the steam chamber breakthrough interlining, provide technical support for the oil field SAGD breakthrough interlining, it is of great significance for promoting SAGD efficient development.

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