Example Abstracts

Business Transformation

An integrated solution to tackle challenges in oil and gas production regulation in Mexico

By Ulises Neri Flores, Comisión Nacional de Hidrocarburos

Mexico’s hydrocarbons exploration and production activities are undertaken in a broader and diverse environment containing onshore and offshore fields, both conventional and uncoventional, with all types of hydrocarbons, from extra-heavy oil to light oil and from gas and condensate to dry gas fields. In addition, production operations are performed by multiple operating companies, including the state-owned company PEMEX, as a result of the comprehensive Energy Reform.

Regulation of these activities considering this widely varied production, technology and operating conditions represents a challenge to provide a broad framework that is adjusted to both local and multinational operating companies while safeguarding the interest of the government in an attractive environment for investors.

The Integral System for Hydrocarbons Extraction (SIEH) allows the consistent and integrated flow of information to provide further support to the compliance-tracking of the regulatory processes related to reserves, field development plans, production measurement and commercialization. In addition to the compliance-tracking in a timely and reliable manner, the SIEH enables multiple detailed technical analyses and integral KPI´s associated to reserves evaluation, economic evaluation, fiscal regimes and contracts considerations, sensitivity analyses and risk evaluation which fosters the optimum development of the energy industry in the short, mid and long term.

This ambitious solution is achieved by the interaction of SIS production and economics solutions combined in a seamless integration with the National Hydrocarbon’s Commission (CNH) hydrocarbons extraction regulation. The SIEH manages reporting levels from the technical and economical staff to the executive/commissioners level inside the CNH while also allowing for detailed reports directed to other government dependencies like the energy ministry or finance ministry and international organizations such as the IEA International Energy Agency.

SIEH represents the cornerstone to foster the Oil and Gas technical regulation in hydrocarbons extraction and help to promote the continuing success of the Mexican Energy Reform with the interaction of the CNH with the operating companies working in Mexico that took into consideration the experienced technical support from the SIS Team combined with the high level IT solutions.

See the full list of the Technical abstracts from 2017

 

Use case of Petrel Platform

Deterministic Simultaneous Inversion for Reservoir Delineation and Fluid/Lithology Characterization using Petrel’s QI Tools

By Dr Arturo Contreras, Woodside Energy Ltd

Presented here is an assessment of the value of the Petrel QI tools for reservoir delineation and fluid/lithology characterization in a Triassic Gas Field.


For each step in the workflow the presentation will address highlights, pitfalls and limitations of the current QI toolbox implementation in Petrel.

In the test study, an initial feasibility analysis was performed to test the suitability of the seismic data quality and local rock properties for lithology and fluid discrimination via inversion. Cross-plot analysis showed that a fluid-sensitive modulus attribute can be effectively used to discriminate between brine and gas-bearing sands with gas sands showing the lowest attribute values. Fluid substitution and synthetic image gather modelling shows a clear increase in amplitude when brine is substituted with gas. Additionally, comparison of the partial angle stacks at the gas discovery well location shows a clear increase in amplitude with angle.

The seismic inversion phase consisted of (1) trace-alignment (seismic trace alignment module), (2) well-tie (seismic well tie module), (3) deterministic, angle-dependent wavelet estimation (wavelet extraction module), (4) Low-frequency modelling (inversion property builder), (5) inversion (simultaneous inversion module), and (6) qc of the results. Deterministic simultaneous inversion was conducted integrating the four partial angle stacks, the angle-dependent wavelets and the low frequency models using Petrel’s inversion algorithm for P-impedance, Vp/Vs, and density. The results were then quality-checked in the data space by inspection of the residuals between the inverted synthetic and input reflectivity data and the relative misfit, and in the model space plotting the measured logs vs the inversion results extracted at the well location. Finally a Fluid-lithogy sensitive volume was computed from the inverted volumes and a great correlation was achieved between the derived fluid attribute results and the gas-bearing sands.

The final phase of visualization and interpretation of the results consisted of attribute extraction, stratal slicing, and geobody extractions. These techniques were all effectively used to discriminate between sands and shales and delineate the gas-bearing sands with the lowest fluid attribute values. Although most of Petrel’s QI tools were successfully implemented in this reservoir characterization study, some opportunities for improvement were identified including simpler functionalities for inversion parameters testing, inversion results QC and stratal slicing.

See the full list of the Technical abstracts from 2017

 

Production Operations

Getting Smarter and Productive with Real Time Surveillance System to Optimize Artificial Lift System and Production Management of PERTAMINA E&P’s Asset-5 Brown Field

By Andri Haribowo, Pertamina E&P Indonesia

As a mature field and located in the onshore Mahakam Delta area of south east Kalimantan, Sangasanga field has a challenge situation to optimize the oil production with a high response time in the remote and scattered well location. The common operational issues including power supply and well limitations can have negative impact on the ESP run-life, dominantly caused by excessive trips and shutdowns. Additionally, such of trips will result in lengthy downtimes due to the remoteness of the wells. On the production side, these trips will ultimately have a major effect on production target, needs time to back the well on line due to directly observed and checked to know the problem. Real Time Surveillance System is an answer which offering a delivery of better lift system and production performance using real time measurements. It combines the latest in down hole sensors and the data is transmitted in real-time to provide 24/7 surveillance which allow the opportunity for optimization of artificial lift system and production management. Operational data can then be viewed on demand and updated automatically as well as visualized together with the streamed data anywhere and anytime.

As a result of the real time implementation, a big change on respond time has been improved, ESP wells connected to real-time monitoring and surveillance systems provide less shut downs because of proactive responses and early detection of incidents. The notification alarms together with pro-active remedial action can minimize the trips. This situation directly impacts to extend ESP run life and influence the act of operational team to manage and gain more oil production in Sangasanga field. Moreover, to have integrated Production Management and advance well analysis, the real time surveillance data been processed and analyzed by using both of OFM and PIPESIM software then the ESP executions remotely adjusted by Real Time Surveillance System.

See the full list of the Technical abstracts from 2017