SUSTAINED GROWTH THROUGH 
STRATEGIC MANAGEMENT

                                           1997 ANNUAL REPORT


Supplemental Information (Unaudited)



Capitalized Costs.
The following table presents the Company’s aggregate capitalized costs relating to oil and gas producing activities and the related depreciation, depletion, and amortization:

Year ended December 31,

1997 1996
---------------------- ----------------------
Oil and Gas Properties:
   Proved $ 326,836,431 $ 216,310,033
   Unproved (not being amortized)--Domestic 26,735,460 15,733,952
   Unproved (not being amortized)--Foreign 15,104,349 11,886,510
---------------------- ----------------------
368,676,240 243,930,495
Accumulated Depreciation, Depletion,
    and Amortization (67,363,393) (43,920,120)
---------------------- ----------------------
$ 301,312,847 $ 200,010,375
============= =============

 

Of the $41,839,809 of net unproved property costs (primarily seismic and lease acquisition costs) at December 31, 1997, being excluded from the amortizable base, $20,120,485 was incurred in 1997, $8,990,306 was incurred in 1996, $4,583,249 was incurred in 1995, and $8,145,769 was incurred in prior years. The Company expects it will complete its evaluation of the properties representing the majority of these costs within the next two to three years.

Capital Expenditures. The following table sets forth capital expenditures related to the Company’s oil and gas operations:

Year Ended December 31,

1997 1996 1995
----------------- ----------------- -----------------
Acquisition of proved properties $ 8,417,318 $ 1,529,611 $ 3,461,091
Lease acquisitions1,2 21,603,732 16,426,327 9,742,543
Exploration 10,705,115 2,704,281 2,289,814
Development 90,329,619 69,067,024 23,555,988
----------------- ----------------- -----------------
Total3 $ 131,055,784 $ 89,727,243 $ 39,049,436
========== ========== ==========

1Lease acquisitions for 1997, 1996, and 1995 include expenditures of $658,145, $2,712,278, and $2,814,395, respectively, relating to the Company’s initiatives in Russia; 1997, 1996, and 1995 expenditures of $828,133, $487,597, and $304,610, respectively, relating to initiatives in Venezuela; and 1997, 1996, and 1995 expenditures of $1,731,561, $545,980, and $202,206, respectively, relating to initiatives in New Zealand.

2These are actual amounts as incurred by year, including both proved and unproved lease costs. The annual lease acquisition amounts added to proved oil and gas properties (being amortized) for 1997, 1996, and 1995, respectively, were $7,384,385, $9,458,016, and $3,895,871.

3Includes capitalized general and administrative costs directly associated with the acquisition, development, and exploration efforts of approximately $11,700,000, $7,400,000, and $7,100,000 in 1997, 1996, and 1995, respectively. In addition, total includes $2,326,691, $1,549,575, and $1,442,022 in 1997, 1996, and 1995, respectively, of capitalized interest on unproved properties.

Results of Operations. The following table sets forth results of the Company's oil and gas operations:

Year Ended December 31,

1997 1996 1995
--------------------- --------------------- ---------------------
Oil and gas sales $ 69,015,189 $ 52,770,672 $ 22,527,892
Production costs (11,383,887) (8,377,044) (6,826,306)
Depreciation, depletion, and amortization (23,443,273) (15,812,134) (8,349,324)
--------------------- --------------------- ---------------------
34,188,029 28,581,494 7,352,262
Income taxes (11,165,058) (9,689,126) (2,110,099)
--------------------- --------------------- ---------------------
Results of producing activities $ 23,022,971 $ 18,892,368 $ 5,242,163
============ ============ ============
Amortization per physical unit of production
   (equivalent Mcf of gas) $ 0.92 $ 0.81 $ 0.75
============ ============ ============

 

Supplemental Reserve Information. The following information presents estimates of the Company’s proved oil and gas reserves, which are all located onshore in the United States. All of the Company’s reserves were determined by Company personnel and audited by H. J. Gruy and Associates, Inc. ("Gruy"), independent petroleum consultants. Gruy’s summary report dated February 9, 1998, is set forth as an exhibit to the Form 10-K Report for the year ended December 31, 1997, and includes definitions and assumptions that served as the basis for the estimates of proved reserves and future net cash flows. Such definitions and assumptions should be referred to in connection with the following information:

Estimates of Proved Reserves
Oil and
Natural Gas Condensate
(Mcf) (Bbls)
--------------- ---------------
Proved reserves as of December 31, 19941 76,263,964 4,553,267
   Revisions of previous estimates2 6,982,317 (421,901)
   Purchases of minerals in place 4,166,922 254,211
   Sales of minerals in place (13,215) (10,617)
   Extensions, discoveries, and other additions 62,870,240 1,592,456
   Production3 (6,702,708) (545,435)
--------------- ---------------
Proved reserves as of December 31, 19951 143,567,520 5,421,981
   Revisions of previous estimates2 (9,544,391) (816,065)
   Purchases of minerals in place 2,676,393 97,178
   Sales of minerals in place (4,163,770) (340,706)
   Extensions, discoveries, and other additions 107,762,886 1,745,307
   Production3 (14,540,437) (623,386)
--------------- ---------------
Proved reserves as of December 31, 19961 225,758,201 5,484,309
   Revisions of previous estimates2 (22,774,899) (427,412)
   Purchases of minerals in place 30,342,398 580,278
   Sales of minerals in place (1,155,706) (50,909)
   Extensions, discoveries, and other additions 102,479,883 2,945,037
   Production3 (20,344,208) (672,385)
--------------- ---------------
Proved reserves as of December 31, 19971 314,305,669 7,858,918
============= =============
Proved developed reserves,
   December 31, 1994 46,406,448 3,209,387
   December 31, 1995 81,532,025 3,313,226
   December 31, 1996 135,424,880 3,622,480
   December 31, 1997 191,108,214 4,288,696

1Proved reserves exclude quantities subject to the Company’s volumetric production payment agreement.

2Revisions of previous quantity estimates are related to upward or downward variations based on current engineering information for production rates, volumetrics, and reservoir pressure. Additionally, changes in quantity estimates are affected by the increase or decrease in crude oil and natural gas prices at each year end. Proved reserves as of December 31, 1997, were based upon prices of $2.78 per Mcf of natural gas and $15.76 per barrel of oil, compared to $4.47 per Mcf and $23.75 per barrel as of December 31, 1996.

3Natural gas production for 1995, 1996, and 1997 excludes 1,211,255, 1,156,361, and 1,015,226 Mcf, respectively, delivered under the Company’s volumetric production payment agreement.

Standardized Measure of Discounted Future Net Cash Flows. The standardized measure of discounted future net cash flows relating to proved oil and gas reserves is as follows:

Year Ended December 31,

1997 1996 1995
------------------------ ------------------------ ------------------------
Future gross revenues $ 994,828,072 $ 1,141,831,786 $ 445,572,715
Future production costs (273,475,056) (228,626,881) (121,317,850)
Future development costs (92,946,811) (59,988,855) (42,607,921)
------------------------ ------------------------ ------------------------
Future net cash flows before income taxes 628,406,205 853,216,050 281,646,944
Future income taxes (135,587,216) (211,375,632) (55,469,213)
------------------------ ------------------------ ------------------------
Future net cash flows after income taxes 492,818,989 641,840,418 226,177,731
Discount at 10% per annum (199,980,649) (274,608,116) (97,273,647)
------------------------ ------------------------ ------------------------
Standardized measure of discounted future net cash flows
   relating to proved oil and gas reserves $ 292,838,340 $ 367,232,302 $ 128,904,084
============== ============== ==============


The standardized measure of discounted future net cash flows from production of proved reserves was developed as follows:

1. Estimates are made of quantities of proved reserves and the future periods during which they are expected to be produced based on year-end economic conditions.

2. The estimated future gross revenues of proved reserves are priced on the basis of year-end prices, except in those instances where fixed and determinable gas price escalations are covered by contracts limited to the price the Company reasonably expects to receive.

3. The future gross revenue streams are reduced by estimated future costs to develop and to produce the proved reserves, as well as certain abandonment costs based on year-end cost estimates and the estimated effect of future income taxes.

4. Future income taxes are computed by applying the statutory tax rate to future net cash flows reduced by the tax basis of the properties, the estimated permanent differences applicable to future oil and gas producing activities, and tax carry forwards.

The estimates of cash flows and reserves quantities shown above are based on year-end oil and gas prices. Under Securities and Exchange Commission rules, companies that follow the full-cost accounting method are required to make quarterly Ceiling Limitation calculations, using prices in effect as of the period end date presented (see Note 1). Application of these rules during periods of relatively low oil and gas prices, even if of short-term seasonal duration, may result in write-downs.

The standardized measure of discounted future net cash flows is not intended to present the fair market value of the Company’s oil and gas property reserves. An estimate of fair value would also take into account, among other things, the recovery of reserves in excess of proved reserves, anticipated future changes in prices and costs, an allowance for return on investment, and the risks inherent in reserve estimates.

The following are the principal sources of change in the standardized measure of discounted future net cash flows:

Year Ended December 31,

1997 1996 1995
------------------------ ------------------------ ------------------------
Beginning balance $ 367,232,302 $ 128,904,084 $ 66,471,967
------------------------ ------------------------ ------------------------
Revisions to reserves proved in prior years--
   Net changes in prices, production costs, and future
      development costs (238,743.291) 144,386,724 25,415,116
   Net changes due to revisions in quantity estimates (27,188,512) (25,755,091) 4,735,186
   Accretion of discount 47,068,172 14,703,841 6,939,460
   Other (38,347,310) 6,649,394 (10,981,721)
------------------------ ------------------------ ------------------------
Total revisions (257,210,941) 139,984,868 26,108,041
New field discoveries and extensions, net of future
    production and development costs 110,396,029 208,250,909 44,292,042
Purchases of minerals in place 29,290,334 6,835,362 4,928,563
Sales of minerals in place (2,373,547) (8,084,581) (74,858)
Sales of oil and gas produced, net of production costs (56,181,494) (42,723,456) (13,913,612)
Previously estimated development costs incurred 55,742,684 19,883,446 16,303,629
Net change in income taxes 45,942,973 (85,818,330) (15,211,688)
------------------------ ------------------------ ------------------------
Net change in standardized measure of discounted
   future net cash flows (74,393,962) 238,328,218 62,432,117
------------------------ ------------------------ ------------------------
Ending balance $ 292,838,340 $ 367,232,302 $ 128,904,084
============== ============== ==============

 

Quarterly Results. The following table presents summarized quarterly financial information for the years ended December 31, 1996 and 1997:

Diluted
Income Before Basic Income Income
Revenues Income Taxes Net Income Per Share1 Per Share1
----------------- ------------------- ----------------- ----------------- -----------------
1996
First Quarter $ 11,188,847 $ 4,561,523 $ 3,082,381 $          .22 $          .20
Second Quarter 12,557,891 5,480,944 3,678,316 .26 .24
Third Quarter 15,432,193 7,178,573 4,641,953 .30 .29
Fourth Quarter 21,589,301 11,564,743 7,622,800 .46 .46
----------------- ----------------- ----------------- ----------------- -----------------
   Total $ 60,768,232 $ 28,785,783 $ 19,025,450 $    1.27 $     1.25
========== ========== ========== ========== ==========
1997
First Quarter $ 21,245,469 $ 10,161,045 $ 6,769,263 $          .41 $          .37
Second Quarter 16,925,842 6,007,474 4,113,689 .25 .24
Third Quarter 19,225,453 7,024,524 4,685,689 .29 .27
Fourth Quarter 22,525,438 9,936,563 6,741,548 .41 .37
----------------- ----------------- ----------------- ----------------- -----------------
   Total $ 79,922,202 $ 33,129,606 $ 22,310,189 $    1.35 $     1.26
========== ========== ========== ========== ==========

1Amounts prior to the fourth quarter of 1997 have been retroactively restated to give recognition to: (a) an equivalent change in capital structure as a result of a 10% stock dividend in October 1997 (see Note 2 to the Company's financial statements); and (b) the adoption of Statement of Financial Accounting Standards No. 128, "Earnings per Share" (see Note 2 to the Company’s financial statements).


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