A Simple and Swift Method of Optimizing Oil and Gas Well Placement from Static Reservoir Data Utilizing Modified Well Index and Lagrange Multiplier

A Well placement is a well-known technique in the oil and gas industry for production optimization and are generally classified into local and global methods. The use of simulation software often deployed under the direct optimization technique called global method. The production optimization of L-X field which is at primary recovery stage having five producing wells was the focus of this work. The attempt was to optimize L-X field using a well placement technique.The local methods are generally very efficient and require only a few forward simulations but can get stuck in a local optimal solution. The global methods avoid this problem but require many forward simulations. With the availability of simulator software, such problem can be reduced thus using the direct optimization method. After optimization an increase in recovery factor of over 20% was achieved. The results provided an improvement when compared with other existing methods from the literatures.

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Analysis and Comparison of Seal Ability of Premium Tubing Connections under Axial Alternating Load

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.423-426.2035 ◽

2013 ◽

Vol 423-426 ◽

pp. 2035-2039

Author(s):

Long Cang Huang ◽

Yin Ping Cao ◽

Yang Yu ◽

Yi Hua Dou

Keyword(s):

Contact Pressure ◽

Oil And Gas ◽

Element Analysis ◽

Gas Well ◽

Cycle Number ◽

Compression Load ◽

Well Production ◽

Maximum Contact ◽

Contact Pressures ◽

Better Than

In the process of oil and gas well production, tubing connection stand the axial alternating load during open well, shut well and fluid flow. In order to know premium connection seal ability under the loading, two types of P110 88.9mmx6.45mm premium tubing connections which called A connection and B connection are performed with finite element analysis, in which contact pressures and their the regularities distribution on sealing surface are analyzed. The results show that with the increasing of cycle number, the maximum contact pressures on sealing surface of both A connection and B connection are decreased. The decreasing of the maximum contact pressures on B connection is greater than those on A connection. With the increasing of cycle number of axial alternating compression load, the maximum contact pressure on sealing surface of A connection is decreased, and the maximum contact pressure on sealing surface of B connection remains constant. Compared the result, it shows that the seal ability of A connection is better than B connection under axial alternating tension load, while the seal ability of B connection is better than type A connection under axial alternating compression load.

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