PROMISSORY NOTE
                                 NOTE# BRIDGE001

                                  July 17, 1997


FOR VALUE  RECEIVED  hereby  specified to be a fifty thousand  dollar  ($50,000)
Bridge Loan  deposited  into the account of  HyperDynamics  Corporation at Frost
Bank;  as one step in the  currently  ongoing  process  of  capital  restructure
necessary to give the company an opportunity to be a viable  economic entity and
effect it's business plan;

the  undersigned  ("Maker"),  promises  to pay  to  the  order  of  Emerald  Bay
Investments,  LTD (A Caymen  Islands  Company) or it's  representatives,  heirs,
beneficiaries,  successors  or assigns  ("Payee"),  at such address as Payee may
designate,  in the legal and lawful money of the United States of America, on or
before August 31, 1997,  the principal sum of Fifty Thousand  Dollars  ($50,000)
plus accrued interest accrued daily at a 10% annual interest rate;

Should the  payment  not be made by the August 31,  1997 due date,  the Payee is
hereby granted an option to receive the restricted  common stock of the Maker in
full payment of debt still owed to Payee;  which at Payee's sole  discretion may
exercise by written  notice to exercise it's option after August 31, 1997.  Upon
receipt of Payee's written notice to exercise it's option,  Maker will have five
working days to either make full cash payment of amounts due or the  appropriate
officer of the Maker will be obligated to cause it's restricted  common stock to
be issued in full payment of remaining unpaid debt as follows:

The number of restricted common stock shares of Maker to be issued to Payee will
be  calculated  as: The remaining  unpaid  balance on this note divided by three
cents (.03) per share.


THIS NOTE IS MADE UNDER AND SHALL BE CONSTRUED IN ACCORDANCE  WITH, AND GOVERNED
BY, THE LAWS OF THE STATE OF TEXAS.



/s/ Kent Watts          ,   Kent Watts, President for
HyperDynamics Corporation (Maker)
<PAGE>
                                 PROMISSORY NOTE
                                 NOTE# BRIDGE002

                                  July 25, 1997


FOR VALUE  RECEIVED  hereby  specified to be a fifty thousand  dollar  ($50,000)
Bridge Loan  deposited  into the account of  HyperDynamics  Corporation at Frost
Bank;  as one step in the  currently  ongoing  process  of  capital  restructure
necessary to give the company an opportunity to be a viable  economic entity and
effect it's business plan;

the  undersigned  ("Maker"),  promises  to pay  to  the  order  of  Emerald  Bay
Investments,  LTD (A Caymen  Islands  Company) or it's  representatives,  heirs,
beneficiaries,  successors  or assigns  ("Payee"),  at such address as Payee may
designate,  in the legal and lawful money of the United States of America, on or
before August 31, 1997,  the principal sum of Fifty Thousand  Dollars  ($50,000)
plus accrued interest accrued daily at a 10% annual interest rate;

Should the  payment  not be made by the August 31,  1997 due date,  the Payee is
hereby granted an option to receive the restricted  common stock of the Maker in
full payment of debt still owed to Payee;  which at Payee's sole  discretion may
exercise by written  notice to exercise it's option after August 31, 1997.  Upon
receipt of Payee's written notice to exercise it's option,  Maker will have five
working days to either make full cash payment of amounts due or the  appropriate
officer of the Maker will be obligated to cause it's restricted  common stock to
be issued in full payment of remaining unpaid debt as follows:

The number of restricted common stock shares of Maker to be issued to Payee will
be  calculated  as: The remaining  unpaid  balance on this note divided by three
cents (.03) per share.


THIS NOTE IS MADE UNDER AND SHALL BE CONSTRUED IN ACCORDANCE  WITH, AND GOVERNED
BY, THE LAWS OF THE STATE OF TEXAS.



/s/ Kent Watts            ,Kent Watts, President for
HyperDynamics Corporation (Maker)

<PAGE>
                                 PROMISSORY NOTE
                                 NOTE# BRIDGE003

                                 August 29, 1997


FOR VALUE  RECEIVED  hereby  specified  to be a  Seventy  Five  Thousand  Dollar
($75,000) Bridge Loan deposited into the account of HyperDynamics Corporation at
Frost Bank; as one step in the currently ongoing process of capital  restructure
necessary to give the company an opportunity to be a viable  economic entity and
effect it=s business plan;

the  undersigned  (AMaker@),  promises  to pay  to  the  order  of  Emerald  Bay
Investments,  LTD (A Caymen  Islands  Company) or it=s  representatives,  heirs,
beneficiaries,  successors  or assigns  (APayee@),  at such address as Payee may
designate,  in the legal and lawful money of the United States of America, on or
before  August 31, 1997,  the  principal  sum of Seventy Five  Thousand  Dollars
($75,000) plus accrued interest accrued daily at a 10% annual interest rate;

Should the  payment  not be made by the August 31,  1997 due date,  the Payee is
hereby granted an option to receive the restricted  common stock of the Maker in
full payment of debt still owed to Payee;  which at Payee=s sole  descretion may
excercise by written notice to excercise it=s option after August 31, 1997. Upon
receipt of Payee=s written notice to excercise it=s option, Maker will have five
working days to either make full cash payment of amounts due or the  appropriate
officer of the Maker will be obligated to cause it=s restricted  common stock to
be issued in full payment of remaining unpaid debt as follows:

     The number of restricted common stock shares of Maker to be issued to Payee
         will be  calculated  as:  The  remaining  unpaid  balance  on this note
         devided by three cents (.03) per share.


THIS NOTE IS MADE UNDER AND SHALL BE CONSTRUED IN ACCORDANCE  WITH, AND GOVERNED
BY, THE LAWS OF THE STATE OF TEXAS.



/s/ Kent Watts           Kent Watts, President for
HyperDynamics Corporation (Maker)
<PAGE>
                       1

                                 PROMISSORY NOTE
                                 NOTE# BRIDGE004

                               September 22, 1997


FOR VALUE RECEIVED hereby  specified to be a Twenty  Thousand  Dollar  ($20,000)
Bridge Loan  deposited  into the account of  HyperDynamics  Corporation at Frost
Bank;  as one step in the  currently  ongoing  process  of  capital  restructure
necessary to give the company an opportunity to be a viable  economic entity and
effect it's business plan;

the  undersigned  ("Maker"),  promises  to pay  to  the  order  of  Emerald  Bay
Investments,  LTD (A Caymen  Islands  Company) or it's  representatives,  heirs,
beneficiaries,  successors  or assigns  ("Payee"),  at such address as Payee may
designate,  in the legal and lawful money of the United States of America, on or
before September  29,1997 the principal sum of Twenty Thousand Dollars ($20,000)
plus accrued interest accrued daily at a 10% annual interest rate;

Should the payment not be made by the September 29, 1997 due date,  the Payee is
hereby granted an option to receive the restricted  common stock of the Maker in
full  payment  of debt still owed to Payee;  which at  Payee's  sole  option may
exercise by written  notice to exercise  it's option after  September  29, 1997.
Upon receipt of Payee's written notice to exercise it's option,  Maker will have
five  working  days to either  make  full cash  payment  of  amounts  due or the
appropriate  officer of the Maker  will be  obligated  to cause it's  restricted
common stock to be issued in full payment of remaining unpaid debt as follows:

The number of restricted common stock shares of Maker to be issued to Payee will
be  calculated  as: The remaining  unpaid  balance on this note divided by three
cents (.03) per share.


THIS NOTE IS MADE UNDER AND SHALL BE CONSTRUED IN ACCORDANCE  WITH, AND GOVERNED
BY, THE LAWS OF THE STATE OF TEXAS.



/s/ Kent Watts              , Kent Watts, President for
HyperDynamics Corporation (Maker)