Standoff and Caliper Measurements While Drilling Using a New Formation-Evaluation Tool with Three Ultrasonic Transducers

1995 ◽  
Vol 10 (02) ◽  
pp. 104-111
Author(s):  
J.R. Birchak ◽  
R.G. Matthews ◽  
G.L. Moake ◽  
W.E. Schultz
Keyword(s):  
Ultrasonic Transducers ◽  
Evaluation Tool ◽  
Formation Evaluation ◽  
New Formation

Research of New Driving Motor Power Instrument of Formation Evaluation Tool Hydraulic Pump

2015 ◽  
Vol 734 ◽  
pp. 847-851
Author(s):  
Li Yong Zhao ◽  
Qian Wu
Keyword(s):  
Experimental Results ◽  
Test Evaluation ◽  
Motor Power ◽  
Evaluation Instrument ◽  
Evaluation Tool ◽  
Hydraulic Pump ◽  
Formation Evaluation ◽  
Overall Design ◽  
Drive Motor ◽  
New Type

In view of existing shortcomings and insufficiency in the current formation test evaluation instrument hydraulic pump drive motor power, this paper designs a new type hydraulic pump drive motor power. This paper first introduces the new hydraulic pump drive motor overall design scheme of power, and then the algorithm is analyzed. Finally, the experimental results prove the feasibility and practicability of the new driving motor power instrument.

A New Formation Evaluation Technique for the Lower Tertiary in South Texas - Predicting Production in Low Permeability, Fine-Grained Sandstones

2004 ◽  
Author(s):  
John C. Rasmus ◽  
John P. Horkowitz ◽  
Thierry Chabernaud ◽  
Peter Graham ◽  
Malcolm Summers ◽  
...  
Keyword(s):  
South Texas ◽  
Low Permeability ◽  
Evaluation Technique ◽  
Formation Evaluation ◽  
Fine Grained ◽  
Lower Tertiary ◽  
New Formation

Maximizing the Value of Pulsed-Neutron Logs: A Complex Case Study of Gas Pressure Assessment Through Casing

2020 ◽  
Vol 61 (6) ◽  
pp. 610-622
Author(s):  
Chiara Cavalleri ◽  
◽  
Gerrit Brouwer ◽  
Dimas Kodri ◽  
David Rose ◽  
...  
Keyword(s):  
Optimal Parameter ◽  
Gas Pressure ◽  
Complex Case ◽  
Detailed Knowledge ◽  
Data Quality Control ◽  
Evaluation Tool ◽  
Rock Composition ◽  
Current Time ◽  
Formation Evaluation ◽  
Neutron Porosity

Casedhole logging for formation evaluation and input to determine the redevelopment potential of an oil producer with a challenging production history was conducted. This included an intelligent assessment of formation gas pressure through casing, which was later confirmed by perforating. The target reservoirs are Triassic sandstones drilled as a gas exploration prospect. Based on openhole log data, the prospect appeared to be oil bearing. The well has been producing oil for several years and is now a candidate for a gas cap blowdown. The presence of heterogeneous layers with varied rock quality and producibility indexes coupled to complexity in fluids distribution and zonal isolation issues complicates the development process and ability to optimize recovery from any contributing level. Recently, a new-generation casedhole formation evaluation tool that provides multiple independent formation property measurements was deployed to enhance knowledge of the formation parameters while describing the current gas and oil volumes. Sigma, neutron porosity, fast-neutron cross section (FNXS), and elemental concentrations, including total organic carbon from inelastic and capture spectroscopy, were simultaneously recorded. Because the well is highly deviated in the zones of interest, the tool was efficiently conveyed on wireline using tractor technology. The evaluation techniques used to study this rich set of data reveal several pieces of information that are essential to the petrophysicists and geologists, and to the reservoir and production engineers. A multimineral solver analysis guided by the prior knowledge of the rocks using cores from offset wells was conducted to quantify the porosity and gas-oil contact levels while giving access to detailed knowledge of matrix and rock composition for refining the reservoir models. Additionally, a novel method to determine gas pressure at the current time from the casedhole log measurements was applied to support reservoir management. The highly sensitive sigma, neutron porosity, and FNXS gas properties can be parameterized as a function of pressure and temperature if the formation and fluid properties are known. This is a well-established principle that can finally be applied independently and directly to multiple measurements. The computations are done independently and checked against each other for consistency and to support optimal parameter setting, in an iterative manner. This is particularly important in this scenario where the complexity of the wellbore environment and history of the well could have complicated the ability to achieve enough precision on the estimated pressures when coming from a single method or if modeling is required. The log results, with validation, and implications for the well redevelopment are presented together with a general discussion on the methodology and applicability based on this well experience. The importance of meticulous job preparation, prejob modeling, and data quality control is also highlighted. The information is key to defining the future well development management strategy and clarify the role that casedhole logging can play as part of the complete well evaluation process.

A New Formation Evaluation Technique for the Lower Tertiary in South Texas - Predicting Production in Low Permeability, Fine-Grained Sandstones

2006 ◽  
Vol 9 (01) ◽  
pp. 24-31
Author(s):  
John C. Rasmus ◽  
John P. Horkowitz ◽  
Thierry Chabernaud ◽  
Peter Graham ◽  
Malcolm Summers ◽  
...  
Keyword(s):  
South Texas ◽  
Low Permeability ◽  
Evaluation Technique ◽  
Formation Evaluation ◽  
Fine Grained ◽  
Lower Tertiary ◽  
New Formation

The formation evaluation tool and its application in offshore China

2006 ◽  
Vol 3 (1) ◽  
pp. 62-68 ◽  
Author(s):  
Jianxin Liu ◽  
Conghui Zhang ◽  
Xishun Pang
Keyword(s):  
Evaluation Tool ◽  
Formation Evaluation
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