EXHIBIT 2.3 AGREEMENT AND PLAN OF MERGERMerger Agreement • December 23rd, 1999 • Unocal Corp • Crude petroleum & natural gas • Delaware
UNOCAL CORPORATIONJoint Filing Agreement • December 23rd, 1999 • Unocal Corp • Crude petroleum & natural gas
The undersigned each agree as follows: (i) that certain statement on Schedule 13D relating to the Common Stock, par value $.01 per share, of Titan Exploration, Inc., a Delaware corporation, is filed on behalf of each of them, (ii) such Statement on Schedule 13D is adopted by each of them, (iii) all future amendments to such Statement on Schedule 13D will, unless written notice to the contrary is delivered as described below, be jointly filed on behalf of each of them, and (iv) the provisions of Rule 13d-1(f)(1) under the Securities Exchange Act of 1934, as amended, apply to each of them. This Agreement may be terminated with respect to the obligation to file jointly future amendments to such Statement on Schedule 13D as to any of the undersigned upon such person giving written notice thereof to each of the other persons signatory hereto, at the principal office thereof.
EXHIBIT 2.1 TITAN RESOURCES HOLDINGS, INC. Stockholders Voting Agreement ----------------------------- This STOCKHOLDERS VOTING AGREEMENT, dated December 13, 1999 (the "Agreement"), is made and entered into by and among Titan Resources Holdings, Inc.,...Stockholders Voting Agreement • December 23rd, 1999 • Unocal Corp • Crude petroleum & natural gas • Delaware
EXHIBIT 2.4 BUSINESS OPPORTUNITIES AGREEMENT This BUSINESS OPPORTUNITIES AGREEMENT (this "Agreement"), dated as of December 13, 1999, is entered into by Union Oil Company of California, a California corporation ("Union Oil"), Titan Resources Holdings,...Business Opportunities Agreement • December 23rd, 1999 • Unocal Corp • Crude petroleum & natural gas • Delaware
