Executive Summary

Greetings, SPE Production & Operations subscribers, and welcome to the second-quarter edition of virtual SPE PO. Here are some comments from Shauna Noonan, Technical Director, Production & Operations, regarding unconventional resources:

“The buzzword unconventional resources appears in the title of many industry events—including those offered by SPE—to entice authors, attendees, and exhibitors. In March 2014, the Training, Programs, and Meetings (TPM) Board Committee discussed strategy around the use of the term unconditional resources for SPE events. As of the date this is being written (late April 2014), PetroWiki still defines unconventional resources as Hydrocarbon from unconventional and more difficult to produce resources such as (hydrocarbon): shale gas, shale oil, heavy and viscous oil, hydrates, tight gas, etc. For SPE members interested in attending events on a specific type of unconventional resource, such as shale gas, it is difficult to determine how much, if any, of the content is concentrated on shale gas when only the term unconventional resources is used to describe the event. The TPM Board Committee agreed that (1) heavy and viscous oil resources are not to be included in the definition of unconventional resources, and they will be changing the PetroWiki definition; and (2) it must be clear from the title of an SPE event what exactly is being covered. Only conferences that cover all types of unconventional resources can use that term in their event title. For example, if a workshop is focused only on shale gas, then the more-specific term shale gas should be used in the title, and not the more-generic term unconventional resources.

The TPM Board committee took this into consideration when developing a 5-year global strategy on SPE’s unconventional resources events, more news of which will be shared with the SPE membership in a future JPT article.”

And now, we move on to the seven peer-approved papers in this issue.

Surveillance

Both negative and positive tests are used by the authors of Full-Scale Testing Shows Advantages of a Quantitative Approach to Interpreting Inflow Tests to demonstrate how some nonideal factors and measurement errors can lead to misleading results in interpreting negative pressure tests. The authors of Coal-Seam-Gas Reservoir Surveillance—Extracting Value From Suspended Coreholes, Surat Basin, Queensland, Australia describe their novel use of cemented-in-place transducers and low permeability cement to extract reservoir-pressure data from wells that are abandoned. In Interpreting Distributed-Temperature Measurements in Deepwater Gas-Well Testing: Estimation of Static and Dynamic Thermal Gradients and Flow Rates, the authors describe how to use transient temperatures from distributed temperature sensing to interpret the flow rate, which may be valuable as an independent rate measurement or as a verification of rates measured at the surface. The method described in Use of Model-Predictive Control for Automating SAGD Well-Pair Operations: A Simulation Study can be used to stabilize steam-assisted-gravity-drainage process variables and maintain them near the optimum conditions. 

Diversion

In Experimental Investigation of Pressure-Drop/Flow-Rate Relationship for Small-Aperture Holes for High-Viscosity Fluids, the authors report new orifice pressure-drop data for high-viscosity fluids at low velocity with fines present, which are conditions that may occur in horizontal heavy-oil completions. The authors of Numerical Evaluation of Dynamic Core-Scale Experiments of Silicate Gels for Fluid Diversion and Flow-Zone Isolation used a commercial reservoir simulator to match laboratory test data as a precursor to upscaling their designs for field applications.

Scale Prevention

The authors of Structure, Stoichiometry, and Modeling of Calcium Phosphonate Scale-Inhibitor Complexes for Application in Precipitation-Squeeze Processes report new laboratory data for nine different scale inhibitors, which will be used to improve the ability to predict scale squeeze behavior and improve the designs for field treatments.

Recent Peer-Approved Papers From Other SPE Journals

Lastly, here are some recent peer-approved papers from SPE’s other journals that may interest SPE PO subscribers:

Risk and Uncertainty Management

  • SPE Drilling & Completion, SPE-169814-PA, “Assessing Wellbore Integrity in Sustained-Casing-Pressure Annulus,” T. Rocha-Valadez, R.A. Hasan, S. Mannan, and C.S. Kabir
  • SPE Drilling & Completion, SPE-163974-PA, “Engineering Cementing Solution for Hutubi Underground-Gas-Storage Project,” X.J. Zhang, S. Taoutaou, Y. Guo, Y.L. An, S.M. Zhong, and Y. Wang
  • SPE Economics & Management, SPE-166269-PA, “The Risk of Using Risk Matrices,” P. Thomas, R.B. Bratvold, and E. Bickel
  • SPE Economics & Management, SPE-164981-PA, “Norwegian Oil and Gas Industry Project to Reduce Hydrocarbon Leaks,” J-E. Vinnem and W. Røed
  • SPE Economics & Management, SPE-160189-PA, “The Value of Assessing Uncertainty,” D. McVay and M.N. Dossary
  • SPE Journal, SPE-135483-PA, “Estimating CO2 Fluxes Along Leaky Wellbores,” Q. Tao, D. Checkai, N. Huerta, and S. Bryant

Stimulation and Wellbore Cleanup

  • Journal of Canadian Petroleum Technology, SPE-165551-PA, “Removal of Manganese Tetraoxide Filter Cake Using a Combination of HCl and Organic Acid,” A.M. Al Moajil and H.A. Nasr-El-Din
  • SPE Drilling & Completion, SPE-159899-PA, “Impact of Completion Design on Fracture Complexity in Horizontal Shale Wells,” R. Manchanda and M.M. Sharma  

Surveillance and Forecasting

  • SPE Reservoir Evaluation & Engineering, SPE-166393-PA, “Experiences With an Efficient Rate-Management Approach for the 8th Tortonian Reservoir in the Vienna Basin,” M. Kornberger and M.R. Thiele
  • SPE Reservoir Evaluation & Engineering, SPE-163843-PA, “Analyzing Production Data From Hydraulically Fractured Wells: The Concept of Induced Permeability Field,” G. Fuentes-Cruz, E. Gildin, and P.P. Valkó
  • SPE Reservoir Evaluation & Engineering, SPE-147529-PA, “The Use of Rate-Transient-Analysis Modeling To Quantify Uncertainties in Commingled Tight Gas Production-Forecasting and Decline-Analysis Parameters in the Alberta Deep Basin,” H. Luo, G. Mahiya, S. Pannett, and P.H. Benham

Artificial Lift

  • Oil & Gas Facilities, SPE-159910-PA, “Experimental Investigation of Wellhead Twin-Screw Pump for Gas-Well Deliquefication,” G.L. Morrison, R. Kroupa, A. Patil, J. Xu, S. Scott, and S. Olsen

Processing

  • Oil & Gas Facilities, SPE-161289-PA, “Flotation, Filtration, and Adsorption: Pilot Trials for Oilfield Produced-Water Treatment,” R.S. Al-Maamari, M. Sueyoshi, M. Tasaki, K. Okamura, Y. Al-Lawati, R. Nabulsi, and M. Al-Battashi

Until next time, stay safe my friends.

Dean Wehunt