Recovery Factor Improvement; A Success Story of Improving 10% of RF in Greater Natih Reservoirs, North of Oman

2021 ◽  
Author(s):  
Hilal Sheibani ◽  
Ratih Wulandari ◽  
Roeland van Gilst ◽  
Hawraa Al Lawati ◽  
Al Mutasem Abri ◽  
...  
Keyword(s):  
Production Efficiency ◽  
Production Optimization ◽  
Recovery Factor ◽  
Opportunity Identification ◽  
Reservoir Properties ◽  
Hydrocarbon Production ◽  
The Road ◽  
Road Map ◽  
Infill Drilling ◽  
Realization Process

Abstract Recovery Factor Improvement (RFI) is a process to check the hydrocarbon production efficiency by incorporating the actual static and dynamic field data, as well as the way how the field being operated. This has been a common process within Shell's portfolio since 2018 (Ref; Muggeridge et al., 2013 & Smalley et al., 2009). The approach has been developed to stimulate the identification of new opportunities to increase the recovery from the existing fields and to aid the maturation of these opportunities into the Opportunity Realization Process. There are four (4) factors that affected overall reservoir recovery factor, they are: Pressure efficiency; related to which pressure can be reduced in the reservoir as dictated by the relevant facilities and wells.Drainage Efficiency; the proportion of the in-place hydrocarbon that is pressure-connected directly to at least one producing well on a production timescale.The "secondary pay" efficiency; takes into account the volumes of poorer quality rock in which the gas remains at pressure above the lowest pressure just outside the wellbore (Pf) when the reservoir is abandoned.Cut-off Efficiency; the proportion of hydrocarbon that is lost due to non-production of the tail.This approach was applied in the dry gas Natih Reservoir fields in the PDO concession area. Before the implementation of RFI, the average recovery factor for Natih was around 70%. This was considered low for a homogenous-dry gas reservoir. The targeted Natih fields were benchmarked against each other with a total of 11 fields with similar reservoir properties. Post the benchmarking exercise, the expected field recovery factor is approximately ~90-93%. The team managed to map out the opportunities to achieve the targeted RF and identified the road map activities. The activities are mainly related to: production optimization: retubing, re-stimulation reduce drainage: infill drilling, horizontal well reduce the field intake through compression The outcome of the mapping was then further analyzed through integrated framework to be matured as a firm-project. The new proposed activities are expected to add around 9% additional recovery to the existing fields. There will be a remaining activities which will be studied in the future, example infill wells and intelligent completions. These will close the gap to TQ and add other addition RF of 11-13%. As conclusion, the RFI was seen as a structured approach to better understanding the field recovery factor based on the integrated surface and subsurface data with a robust analysis to trigger opportunity identification linked to RFI elements. It is similar concept as sweating the asset by generating limit diagram for each recovery mechanism & the road map to achieve the maximum limit. This paper will highlight the Natih Fields RFI analysis, highlighting the key learning and challenges.

PRODUCTION OPTIMIZATION OF SANDING HORIZONTAL WELLS USING A DISTRIBUTED ACOUSTIC SENSING (DAS) SAND MONITORING SYSTEM: A CASE STUDY FROM THE ACG FIELD IN AZERBAIJAN

2021 ◽  
Author(s):  
Zahid Hasanov ◽  
◽  
Parviz Allahverdiyev ◽  
Fuad Ibrahimov ◽  
Alberto Mendoza ◽  
...  
Keyword(s):  
Monitoring System ◽  
Production Efficiency ◽  
Predictive Modelling ◽  
Production Optimization ◽  
Oil Well ◽  
Sand Production ◽  
The Caspian Sea ◽  
Initial Field ◽  
Hydrocarbon Production ◽  
Identify Formation

This paper discusses results from the first successful de­ ployment of a predictive modelling technology that in­ forms pressure optimization procedures to help minimize sand production and increase hydrocarbon production ef­ ficiency in sand prone oil wells. The technique takes variabilities in sand production ob­ served through time across the reservoir section, inferred from downhole sand entry logs, alongside real-time sand transportation logs that monitor sand deposition in pipe as key inputs (both of which computed using a fiber op­ tic Distributed Acoustic Sensor (DAS) based Downhole sand monitoring system). This data is then combined with other time series sensor inputs, like choke position, Down Hole Pressure (DHP) and surface flowline acous­tic measurement (sand detector) to predict drawdown pressure envelopes to improve production efficiency. This paper details observations and initial field results from the first deployment of the capability in a highly deviated sand prone oil well completed with an open hole gravel pack (OHGP) completion in the BP-operated Azeri- Chirag- Gunashli (ACG) field located in the Azer­ baijan sector of the Caspian Sea. The paper will detail observations and procedures used to increase oil produc­tion by over 25% and eliminate sanding risks using the technology. The proposed workflow is part of a compre­hensive suite of downhole sand surveillance and manage­ment tools fueled by streaming analytics capabilities run on DAS data that have played a key role in managing sand production challenges in the ACG field. The technology has been applied numerous times for base protection, drawdown optimization and targeted re­ mediation. In this instance, we discuss the use of the technology to (1) identify and inform the source of sand detected at surface e.g., formation or completion accu-mulation, (2) identify formation intervals at risk of sand­ing, and (3) design advisory operational procedures for production optimization.

A2. PA PRIME MINISTER MAHMUD ABBAS AND ISRAELI PRIME MINISTER ARIEL SHARON, STATEMENTS FOLLOWING THE AQABA SUMMIT, AQABA, JORDAN, 4 JUNE 2003 (EXCERPTS).

2003 ◽  
Vol 33 (1) ◽  
pp. 149-151
Keyword(s):  
Prime Minister ◽  
Jewish State ◽  
The Road ◽  
Road Map ◽  
Associated Press ◽  
Occupied Territories ◽  
Arab States ◽  
President Bush

The quadrilateral meeting at Aqaba, intended to ““kick off implementation”” of the road map, was attended by King Abdallah, Prime Minister Abbas, Prime Minister Sharon, and President Bush. All four leaders made statements at the end of the meeting, but only those by Abbas and Sharon are reproduced below. President Bush's statement was noteworthy for its mention of Israel as a ““vibrant Jewish state”” (““America is strongly committed and I am strongly committed to Israel's security as a vibrant Jewish state””) and of Palestinian ““hopes”” for a ““viable”” state, and for reiterating that the Arab states ““have promised to cut off assistance and the flow of money and weapons to terrorists groups and to help Prime Minister Abbas rid Palestinian areas of terrorism.”” The statements by Abbas and Sharon were drafted with U.S. officials prior to the meeting. Though Abbas did not comply with the Israeli demand of Palestinian acknowledgment of Israel as a ““Jewish state,”” his speech provoked indignation in the occupied territories for its reference to ““the suffering of the Jews”” without mention of Palestinian suffering, its reiterated call for ending the ““armed intifada,”” and its ““renunciation”” of terrorism. Sharon resisted U.S. suggestions to refer to ““settlements,”” but did mention ““unauthorized outposts.”” In reference to Sharon's mention of ““territorial contiguity”” for a ““viable”” Palestinian state, a spokesman indicated that the contiguity would be ensured by ““bridges and tunnels.”” The text of the statements, transcribed by eMediaMill- Works and carried by the Associated Press, was posted on the Washington Post's Website.

The IFLA Global Vision Project in Zimbabwe: Towards a Unified Field Road Map for Libraries

Mousaion ◽  
2020 ◽  
Vol 37 (2) ◽  
Author(s):  
Collence Takaingenhamo Chisita ◽  
Nyarai Patience Chibanda
Keyword(s):  
Economic Transformation ◽  
International Federation ◽  
Access To Information ◽  
Factors Affecting ◽  
The Road ◽  
Unified Field ◽  
Road Map ◽  
Library Associations ◽  
Global Vision ◽  
Library Profession

The development of libraries in any country is critical for its socio-economic transformation especially during this 21st century era where access to information and knowledge underpins development. The International Federation of Library Associations and Institutions (IFLA) launched the Global Vision Project in 2017 as a way of strengthening library throughout the world. The project has seen over 190 countries participating worldwide. For most nations, especially those in the developing countries, this has indeed created platforms for strong and united library associations that are powering literate, informed and participative societies. A number of countries in Africa including Zimbabwe have taken the initiatives to participate in the IFLA Global Vision. This article seeks to examine the challenges and opportunities   for librarians in Zimbabwe in building a united library field. It will also scrutinize the road travelled by librarians in Zimbabwe in their pursuit of a vision to reposition their libraries on the global library landscape. The   article will also study the factors affecting the development of a unified library sector in Zimbabwe. It will also explore how the national professional association Zimbabwe Library Association (ZIMLA) can contribute towards a unified library profession through collaboration. The article also proposes a strategy to enhance cooperation among librarians in Zimbabwe.

EMPOWERING WOMEN THROUGH ENTREPRENEURSHIP: ASPECTS AND APPROACHES

2014 ◽  
Vol 6 (01) ◽  
Author(s):  
JAVED ALAM SHEIKH
Keyword(s):  
Economic Development ◽  
Developed Countries ◽  
Substantial Contribution ◽  
Economic Empowerment ◽  
World Population ◽  
Least Developed Countries ◽  
The Road ◽  
Road Map ◽  
The World ◽  
The Status

Almost 50 per cent of the world population is constituted by the women and they have been making substantial contribution to socio-economic development. But, unfortunately their tremendous contribution remains unrecognized and unnoticed in most of the developing and least developed countries causing the problem of poverty among them. Empowering women has become the key element in the development of an economy. With women moving forward, the family moves, the village moves and the nation moves. Hence, improving the status of women by way of their economic empowerment is highly called for. Entrepreneurship is a key tool for the economic empowerment of women around the world for alleviating poverty. Entrepreneurship is now widely recognized as a tool of economic development in India also. In this paper I have tried to discuss the reasons and role of Women Entrepreneurship with the help of Push and Pull factors. In the last I have also discussed the problems and the road map of Women Entrepreneurs development in India.

C. Sharon Advisor Dov Weisglass, Remarks on Relations with the United States, Disengagement, the Road Map, and the Possibilities of a Palestinian State, Tel Aviv, October 2004 (excerpts)

2005 ◽  
Vol 34 (2) ◽  
pp. 203-207
Keyword(s):  
United States ◽  
National Security ◽  
Full Text ◽  
Prime Minister ◽  
The United States ◽  
Sharp Contrast ◽  
Tel Aviv ◽  
The Road ◽  
Road Map ◽  
The Relationship

Ha'Aretz's lengthy interview with Dov Weisglass, Prime Minister Ariel Sharon's ““point man”” with Washington and probably his closest advisor, was conducted by Ari Shavit and published first in excerpts and two days later in its entirety. In addition to bringing into sharp contrast the contradiction between Israel's declaratory policies and assurances and its actual policies and intentions——and in so doing eliciting a swift ““clarification”” from the Prime Minister's Office——the interview also conveys a sense of the intimacy and easy camaraderie that characterizes U.S.-Israeli interactions. The full text is available at www.haaretz.com. Tell me about the dynamics of the relationship between you [and U.S. national security advisor Condoleezza Rice], and whether it's an unusual relationship.

Solid Fast-Track Evaluation Methodology: Supporting the Decision-Making Process in the Development of Mature Assets

2021 ◽  
Author(s):  
Rubén Dario Gutiérrez Bedoya ◽  
Claudio Marcelo Fonseca ◽  
Michelle Alba Naranjo Leon
Keyword(s):  
Water Management ◽  
Fast Track ◽  
Production Optimization ◽  
Recovery Factor ◽  
Evaluation Methodology ◽  
Current Status ◽  
Reservoir Pressure ◽  
Service Contracts ◽  
Integrated Methodology ◽  
Management Issues

Abstract As most oilfields in Ecuador are approaching to the end of the service contracts under an advanced degree of maturity, it was imperative to implement a fast-track integrated methodology that supports the decisionmaking process during assets' evaluation. This practice aimed to identify new business opportunities and assure the rehabilitation of brownfields. These fields became a target for investors willing to intervene in new joint ventures with moderate risk to boost production and returns. The methodology is prepared to overcome specific challenges such as severe reservoir pressure depletion, harsh water management issues, facilities constraints and integrity. All this while keeping economics and safe operational standards. This process is divided into five stages: First, the diagnosis of field challenges and associated risks, so that review the current status of subsurface and surface aspects. Then, the following three parallel phases are focused on the study of reservoir architecture, dynamics and performance. Finally, the remaining potential of the asset is assessed by integrating action plans to take advantage of current facilities capacities. This workflow was implemented for the evaluation of three assets: Asset 1: Mature field with a secondary gas cap where its current reservoir pressure is 800 psia (initial pressure 4,200 psia). The asset was evaluated in fifteen (15) days resulting in an integrated solution with 14 activities: conversions to injectors, water source, upsizing, reactivations, change zone, and new wells. The results presented an incremental recovery factor of 6% (by 2028) with an expected production peak of 3,500 BOPD (by 2021). Asset 2: A field producing from two main reservoirs with harsh water management issues under a non-monitored waterflooding scheme with challenging sweet spots identification was evaluated in 10 days, resulting in a redevelopment plan considering: production losses optimization, sixteen (16) activities: workovers, dual completions, new wells, reentry, shut-in, and conversion to water injectors. This evaluation delivered an incremental recovery factor of 10% (by 2029). Asset 3: Producing for around one-hundred (100) years with 3,000 wells drilled. There was a lack of pressure support and facilities and well completions integrity. The fast-track assessment focused on production optimization lasted fifteen (15) days, resulting in one-hundred eighteen (118) wells for reactivation representing an additional recovery factor of 3% (by 2029). This work supported the process for contract's renegotiation and assets' acquisition. This integrated methodology aimed to maximize the assets' value while considering the involved shareholders' needs. Each asset was analysed in an integrated and collaborative manner through the propper resources identification and the usage of the latest technology and workflows. High-resolution reservoir simulation, complex python scripts, and a chemical processes simulator were used to perform an in-depth evaluation and meet the expectations.

Integrated Production Model as a Tool for Optimization the Development Strategy of the Sakhalin Oil and Gas Condensate Field

2021 ◽  
Author(s):  
Oleksandr Doroshenko ◽  
Miljenko Cimic ◽  
Nicholas Singh ◽  
Yevhen Machuzhak
Keyword(s):  
History Matching ◽  
Effective Field ◽  
Production Optimization ◽  
Production Model ◽  
Production Forecast ◽  
Hydrocarbon Production ◽  
Integrated Production ◽  
Wellhead Pressure ◽  
Field Development ◽  
The Impact

Abstract A fully integrated production model (IPM) has been implemented in the Sakhalin field to optimize hydrocarbons production and carried out effective field development. To achieve our goal in optimizing production, a strategy has been accurately executed to align the surface facilities upgrade with the production forecast. The main challenges to achieving the goal, that we have faced were:All facilities were designed for early production stage in late 1980's, and as the asset outdated the pipeline sizes, routing and compression strategies needs review.Detecting, predicting and reducing liquid loading is required so that the operator can proactively control the hydrocarbon production process.No integrated asset model exists to date. The most significant engineering tasks were solved by creating models of reservoirs, wells and surface network facility, and after history matching and connecting all the elements of the model into a single environment, it has been used for the different production forecast scenarios, taking into account the impact of infrastructure bottlenecks on production of each well. This paper describes in detail methodology applied to calculate optimal well control, wellhead pressure, pressure at the inlet of the booster compressor, as well as for improving surface flowlines capacity. Using the model, we determined the compressor capacity required for the next more than ten years and assessed the impact of pipeline upgrades on oil gas and condensate production. Using optimization algorithms, a realistic scenario was set and used as a basis for maximizing hydrocarbon production. Integrated production model (IPM) and production optimization provided to us several development scenarios to achieve target production at the lowest cost by eliminating infrastructure constraints.

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