Changes

|+ {{table number|3}}Decline equations

|+ {{table number|3}}Decline equations

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! Solving for

! Solving for || Exponential || Hyperbolic

! Exponential

! Hyperbolic

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| Rate of production

| Rate of production || ''q''_t = ''q''_i ''e''^{– ''Dt''} || <math> q_{t} = q_{\rm i}(1 + nD_{\rm i}t)^{-1/n}</math>

| ''q''_t = ''q''_i ''e''^{– ''Dt''}

| ''q''_t = ''q''_i (1 + ''nD''_i ''t'' )^{–1/ ''n''}

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| Cumulative production

| Cumulative production || ''N_p'' = ( ''q''_i – ''q_t'' )/ ''D'' ||

| ''N_p'' = ( ''q''_i – ''q_t'' )/ ''D''

<math> N_{\rm p} = q_{\rm i}^{n}/[(1 - n)D_{\rm i}](q_{\rm i}^{1 - n} - q_{\rm t}^{1-n})</math>

| <math> q_{t} = q_{\rm i}(1 + nD_{\rm i}t)^{-1/n}</math><br />

<math> N_{\rm p} = q_{\rm i}^{n}/[(1 - n)D_{\rm i}](q_{\rm i}^{1 - n} - q_{\rm t}^{1-n})</math><br />

<math>t = [(q_{\rm i}/q_{\rm ec})^{n} - 1/nD_{\rm i}</math>

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| Life of reservoir

| Life of reservoir || ''t'' = (1/ ''D'' )ln( ''q''_i / ''q''_ec ) || <math>t = [(q_{\rm i}/q_{\rm ec})^{n} - 1/nD_{\rm i}</math>

| ''t'' = (1/ ''D'' )ln( ''q''_i / ''q''_ec )

| ''t'' = [( ''q''_i ''/q''_ec ) ''ⁿ'' – 1/ ''nD''_i

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